diff --git a/electron/api/generated/crabs/evening_detective_server/index.ts b/electron/api/generated/crabs/evening_detective_server/index.ts
index 6b0220e..044bda8 100644
--- a/electron/api/generated/crabs/evening_detective_server/index.ts
+++ b/electron/api/generated/crabs/evening_detective_server/index.ts
@@ -2,6 +2,10 @@
 /* eslint-disable camelcase */
 // @ts-nocheck
 
+export type PlaylistGroupEndMode =
+  | "PLAYLIST_GROUP_END_MODE_REPEAT"
+  | "PLAYLIST_GROUP_END_MODE_STOP"
+  | "PLAYLIST_GROUP_END_MODE_NEXT";
 export type ScreenMode =
   | "SCREEN_MODE_UNSPECIFIED"
   | "SCREEN_MODE_COVER"
@@ -208,17 +212,65 @@ export type DownloadFileReq = {
   filename: string | undefined;
 };
 
-export type PlaylistTrack = {
+export type PlaylistGroup = {
   ID: number | undefined;
   name: string | undefined;
-  filename: string | undefined;
   position: number | undefined;
+  endMode: PlaylistGroupEndMode | undefined;
+};
+
+export type SavePlaylistGroupReq = {
+  playlistID: number | undefined;
+  groupID: number | undefined;
+  name: string | undefined;
+  endMode: PlaylistGroupEndMode | undefined;
+};
+
+export type SavePlaylistGroupRsp = {
+  playlist: Playlist | undefined;
 };
 
 export type Playlist = {
   ID: number | undefined;
   name: string | undefined;
   tracks: PlaylistTrack[] | undefined;
+  groups: PlaylistGroup[] | undefined;
+};
+
+export type PlaylistTrack = {
+  ID: number | undefined;
+  name: string | undefined;
+  filename: string | undefined;
+  position: number | undefined;
+  groupId: number | undefined;
+};
+
+export type DeletePlaylistGroupReq = {
+  playlistID: number | undefined;
+  groupID: number | undefined;
+};
+
+export type DeletePlaylistGroupRsp = {
+  playlist: Playlist | undefined;
+};
+
+export type ReorderPlaylistGroupsReq = {
+  playlistID: number | undefined;
+  groupIDs: number[] | undefined;
+};
+
+export type ReorderPlaylistGroupsRsp = {
+  playlist: Playlist | undefined;
+};
+
+export type SetPlaylistTrackGroupReq = {
+  playlistID: number | undefined;
+  trackID: number | undefined;
+  groupID: number | undefined;
+};
+
+export type SetPlaylistTrackGroupRsp = {
+  playlist: Playlist | undefined;
 };
 
 export type GetPlaylistsReq = {
@@ -649,6 +701,7 @@ export type MusicState = {
   loop: boolean | undefined;
   playback: MusicPlaybackState | undefined;
   stateVersion: number | undefined;
+  groupId: number | undefined;
 };
 
 export type CreateScreenSessionReq = {
@@ -695,6 +748,7 @@ export type SetGameMusicReq = {
   volume: number | undefined;
   loop: boolean | undefined;
   playback: MusicPlaybackState | undefined;
+  groupId: number | undefined;
 };
 
 export type SetGameMusicRsp = {
@@ -704,6 +758,7 @@ export type SetGameMusicRsp = {
 export type AdvanceScreenMusicReq = {
   screenID: string | undefined;
   accessToken: string | undefined;
+  expectedStateVersion: string | undefined;
 };
 
 export type AdvanceScreenMusicRsp = {
@@ -1429,6 +1484,10 @@ export interface EveningDetectiveServer {
   GetPermissions(request: GetPermissionsReq): Promise<GetPermissionsRsp>;
   UploadFile(request: UploadFileReq): Promise<UploadFileRsp>;
   DownloadFile(request: DownloadFileReq): Promise<googleapi_HttpBody>;
+  SavePlaylistGroup(request: SavePlaylistGroupReq): Promise<SavePlaylistGroupRsp>;
+  DeletePlaylistGroup(request: DeletePlaylistGroupReq): Promise<DeletePlaylistGroupRsp>;
+  ReorderPlaylistGroups(request: ReorderPlaylistGroupsReq): Promise<ReorderPlaylistGroupsRsp>;
+  SetPlaylistTrackGroup(request: SetPlaylistTrackGroupReq): Promise<SetPlaylistTrackGroupRsp>;
   GetPlaylists(request: GetPlaylistsReq): Promise<GetPlaylistsRsp>;
   CreatePlaylist(request: CreatePlaylistReq): Promise<CreatePlaylistRsp>;
   UpdatePlaylist(request: UpdatePlaylistReq): Promise<UpdatePlaylistRsp>;
@@ -2066,6 +2125,92 @@ export function createEveningDetectiveServerClient(
         method: "DownloadFile",
       }) as Promise<googleapi_HttpBody>;
     },
+    SavePlaylistGroup(request) { // eslint-disable-line @typescript-eslint/no-unused-vars
+      if (!request.playlistID) {
+        throw new Error("missing required field request.playlistID");
+      }
+      const path = `api/playlists/${request.playlistID}/groups`; // eslint-disable-line quotes
+      const body = JSON.stringify(request);
+      const queryParams: string[] = [];
+      let uri = path;
+      if (queryParams.length > 0) {
+        uri += `?${queryParams.join("&")}`
+      }
+      return handler({
+        path: uri,
+        method: "POST",
+        body,
+      }, {
+        service: "EveningDetectiveServer",
+        method: "SavePlaylistGroup",
+      }) as Promise<SavePlaylistGroupRsp>;
+    },
+    DeletePlaylistGroup(request) { // eslint-disable-line @typescript-eslint/no-unused-vars
+      if (!request.playlistID) {
+        throw new Error("missing required field request.playlistID");
+      }
+      if (!request.groupID) {
+        throw new Error("missing required field request.groupID");
+      }
+      const path = `api/playlists/${request.playlistID}/groups/${request.groupID}`; // eslint-disable-line quotes
+      const body = null;
+      const queryParams: string[] = [];
+      let uri = path;
+      if (queryParams.length > 0) {
+        uri += `?${queryParams.join("&")}`
+      }
+      return handler({
+        path: uri,
+        method: "DELETE",
+        body,
+      }, {
+        service: "EveningDetectiveServer",
+        method: "DeletePlaylistGroup",
+      }) as Promise<DeletePlaylistGroupRsp>;
+    },
+    ReorderPlaylistGroups(request) { // eslint-disable-line @typescript-eslint/no-unused-vars
+      if (!request.playlistID) {
+        throw new Error("missing required field request.playlistID");
+      }
+      const path = `api/playlists/${request.playlistID}/groups/order`; // eslint-disable-line quotes
+      const body = JSON.stringify(request);
+      const queryParams: string[] = [];
+      let uri = path;
+      if (queryParams.length > 0) {
+        uri += `?${queryParams.join("&")}`
+      }
+      return handler({
+        path: uri,
+        method: "PUT",
+        body,
+      }, {
+        service: "EveningDetectiveServer",
+        method: "ReorderPlaylistGroups",
+      }) as Promise<ReorderPlaylistGroupsRsp>;
+    },
+    SetPlaylistTrackGroup(request) { // eslint-disable-line @typescript-eslint/no-unused-vars
+      if (!request.playlistID) {
+        throw new Error("missing required field request.playlistID");
+      }
+      if (!request.trackID) {
+        throw new Error("missing required field request.trackID");
+      }
+      const path = `api/playlists/${request.playlistID}/tracks/${request.trackID}/group`; // eslint-disable-line quotes
+      const body = JSON.stringify(request);
+      const queryParams: string[] = [];
+      let uri = path;
+      if (queryParams.length > 0) {
+        uri += `?${queryParams.join("&")}`
+      }
+      return handler({
+        path: uri,
+        method: "PUT",
+        body,
+      }, {
+        service: "EveningDetectiveServer",
+        method: "SetPlaylistTrackGroup",
+      }) as Promise<SetPlaylistTrackGroupRsp>;
+    },
     GetPlaylists(request) { // eslint-disable-line @typescript-eslint/no-unused-vars
       const path = `api/playlists`; // eslint-disable-line quotes
       const body = null;
diff --git a/electron/online.test.ts b/electron/online.test.ts
index 97d0ce1..699ce17 100644
--- a/electron/online.test.ts
+++ b/electron/online.test.ts
@@ -67,6 +67,9 @@ async function fixture(t: TestContext, secure = true) {
     refreshCalls: 0,
     refreshResponse: null as (() => Promise<Response>) | null,
     advanceCalls: 0,
+    advanceRequest: null as Record<string, unknown> | null,
+    advanceResponse: null as Record<string, unknown> | null,
+    advanceError: 0,
     resultError: false,
     teamsError: false,
     screenTeams: [{ ID: '2', name: 'Ястребы' }, { ID: '1', name: 'Агенты' }],
@@ -140,7 +143,9 @@ async function fixture(t: TestContext, secure = true) {
     }
     if (path === '/api/screens/music/advance') {
       model.advanceCalls++
-      return json({ state: objectMusic(3, 1) })
+      model.advanceRequest = JSON.parse(String(init?.body)) as Record<string, unknown>
+      if (model.advanceError) return json({}, model.advanceError)
+      return json({ state: model.advanceResponse ?? objectMusic(3, 1) })
     }
     if (path === '/api/screens/teams') return model.teamsError ? json({}, 500) : json({ teams: model.screenTeams })
     if (path === '/api/screens/results') {
@@ -258,6 +263,7 @@ async function fixture(t: TestContext, secure = true) {
           playback: body.playback,
           volume: body.volume,
           loop: body.loop,
+          groupId: body.groupId,
           positionMs: body.positionMs,
         }
         return json({ state: model.remote.music })
@@ -2240,3 +2246,47 @@ test('список команд обновляется, сохраняется 
   await restored.select(null)
   assert.equal(c.state.teams, null)
 })
+
+for (const action of ['volume', 'pause', 'resume', 'replay'] as const) {
+  test(`группа сохраняется при команде ${action} нативного плеера`, async (t) => {
+    const f = await fixture(t)
+    await f.prepare()
+    f.controller.output(true)
+    f.model.remote.music = { ...objectMusic(2), groupId: 42 }
+    await f.online.poll()
+    await f.online.planCommand(action === 'volume' ? { action, channel: 'music', volume: 55 } : { action, channel: 'music' })
+    assert.equal((f.model.remote.music as { groupId: number }).groupId, 42)
+    await assert.rejects(f.online.planCommand({ action: 'next', channel: 'music' }), /активной группы/)
+    await assert.rejects(f.online.planCommand({ action: 'track', channel: 'music', trackIndex: 1 }), /активной группы/)
+    await assert.rejects(f.online.planCommand({ action: 'loop', channel: 'music', enabled: true }), /активной группы/)
+  })
+}
+
+test('повтор одного трека группы передаёт точную версию и перезапускает трек', async (t) => {
+  const f = await fixture(t)
+  await f.prepare()
+  f.controller.output(true)
+  const version = '9007199254740995'
+  f.model.remote.music = { ...objectMusic(2), stateVersion: version, groupId: 42, positionMs: 0 }
+  await f.online.poll()
+  send(f.controller, { action: 'play', channel: 'music' })
+  const before = f.controller.state.channels.music.operation
+  f.model.advanceResponse = { ...objectMusic(3), stateVersion: '9007199254740996', groupId: 42, positionMs: 0 }
+  await f.online.musicEnded({ session: f.controller.state.session, channel: 'music', operation: before, status: 'ended', position: 0.1, duration: 0.1 })
+  assert.equal(f.model.advanceRequest?.expectedStateVersion, version)
+  assert.ok(f.controller.state.channels.music.operation > before)
+  assert.equal(f.controller.state.channels.music.trackIndex, 0)
+})
+
+test('группа останавливается при потере связи вместо выхода в общий список', async (t) => {
+  const f = await fixture(t)
+  await f.prepare()
+  f.controller.output(true)
+  f.model.remote.music = { ...objectMusic(2), groupId: 42 }
+  await f.online.poll()
+  send(f.controller, { action: 'play', channel: 'music' })
+  f.model.advanceError = 503
+  await f.online.musicEnded({ session: f.controller.state.session, channel: 'music', operation: f.controller.state.channels.music.operation, status: 'ended', position: 4, duration: 4 })
+  assert.equal(f.controller.state.channels.music.desired, 'stopped')
+  assert.equal(f.controller.state.channels.music.trackIndex, 0)
+})
diff --git a/electron/online.ts b/electron/online.ts
index 55368db..2d90d41 100644
--- a/electron/online.ts
+++ b/electron/online.ts
@@ -624,6 +624,14 @@ export class Online {
   async planCommand(intent: Intent) {
     if (this.busy) throw new Error('Подождите завершения текущего действия')
     const pkg = this.selectedGame()
+    const activeMusic = this.received?.music
+    // shortcut: native track navigation and completion controls have no group catalogue; use website group controls until it does.
+    if (
+      activeMusic?.groupId &&
+      'channel' in intent && intent.channel === 'music' &&
+      (intent.action === 'next' || intent.action === 'track' || intent.action === 'loop')
+    )
+      throw new Error('Треки и режим завершения активной группы меняются через сайт. Для обычного списка выберите весь плейлист.')
     const localVersion = ++this.localCommandVersion
     const localGeneration = this.generation
     const localSession = this.controller.state.session
@@ -707,6 +715,7 @@ export class Online {
         await this.client(true, AbortSignal.timeout(5000)).SetGameMusic({
           gameID: pkg.package.game.id,
           playlistID: c.playlistId ?? 0,
+          groupId: c.playlistId === activeMusic?.playlistId ? activeMusic.groupId : 0,
           trackIndex: c.trackIndex,
           positionMs: Math.max(0, Math.round(c.position * 1000)),
           volume: Math.round(c.volume),
@@ -1673,6 +1682,7 @@ export class Online {
       await client.SetGameMusic({
         gameID: pkg.package.game.id,
         playlistID: id,
+        groupId: 0,
         trackIndex: 0,
         positionMs: 0,
         volume: this.controller.state.channels.music.volume,
@@ -1903,10 +1913,13 @@ export class Online {
       const result = await this.client(false, AbortSignal.timeout(5000)).AdvanceScreenMusic({
         screenID: this.screen.id,
         accessToken: this.screen.token,
+        expectedStateVersion: this.received?.music?.version.toString(),
       })
       if (generation !== this.generation || report.session !== this.controller.state.session) return
       const music = parseRemote({ music: result.state }).music
       if (this.received) {
+        if (music && this.received.music && music.version > this.received.music.version && music.trackId === this.received.music.trackId)
+          this.musicApplied = null
         this.received = { ...this.received, music }
         await this.applyReceived(true)
       }
@@ -1914,7 +1927,9 @@ export class Online {
       if (generation !== this.generation || report.session !== this.controller.state.session) return
       const pkg = this.selectedGame()?.package
       const playlist = pkg?.playlists.find((p) => p.id === c.playlistId)
-      if (pkg && playlist) {
+      if (this.received?.music?.groupId) {
+        send(this.controller, { action: 'stop', channel: 'music' })
+      } else if (pkg && playlist) {
         const nextIndex = c.trackIndex + 1
         const track =
           playlist.tracks[nextIndex < playlist.tracks.length ? nextIndex : c.loop ? 0 : -1]
diff --git a/electron/remote-state.ts b/electron/remote-state.ts
index 6218516..2827d4a 100644
--- a/electron/remote-state.ts
+++ b/electron/remote-state.ts
@@ -79,6 +79,7 @@ export interface RemoteState {
   music: {
     version: bigint
     playlistId: number | null
+    groupId: number
     trackId: number | null
     trackIds: number[]
     filenames: string[]
@@ -156,6 +157,7 @@ export function parseRemote(value: unknown): RemoteState {
     const index = integer(m.trackIndex ?? 0, 0, Number.MAX_SAFE_INTEGER, 'state.music.trackIndex')
     music = {
       version: version(m.stateVersion, 'state.music.stateVersion'),
+      groupId: integer(m.groupId ?? 0, 0, Number.MAX_SAFE_INTEGER, 'state.music.groupId'),
       playlistId: p ? integer(p.ID, 1, Number.MAX_SAFE_INTEGER, 'state.music.playlist.ID') : null,
       trackId: trackIds[index] ?? null,
       trackIds,