Radio Mix and Navidrome's new Instant Mix feature

2fast2furious · February 6, 2026, 11:15am

Issue description:

Reposting as an actual issue after providing some logs, please let me know if anything is missing!

Navidrome now has an instant mix feature which seems to work similarly to symfonium’s radio mix, fetching songs from a similar artists API.

With recent plugin support, there’s now a sonic analysis based implementation (GitHub - NeptuneHub/AudioMuse-AI-NV-plugin: AudioMuse-AI Navidrome Plugin) which overrides this basic instant mix feature with one that’s based on pure sonic similarity. Seems to use the “getSimilarSongs2” API. I installed this and it’s working perfectly on the standard web UI and feishin.

While configuring my server settings on Symfonium, I noticed the “use similar tracks for Radio mix” feature, which I enabled. The issue I’m having is that this doesn’t seem to be mapping directly to navidrome’s instant mix feature, which at this point in other clients is overridden by the audiomuse plugin.

From my observation symfonium still seems to be fetching similar artists to create the queues. Audiomuse playlists are pretty easy to confirm as they are deterministic unless analysis settings are changed.

Logs:

Upload description: 2fast2furious

Additional information:

Reproduction steps:

Media provider:

Subsonic

Screenshots:

Tolriq · February 6, 2026, 12:58pm

Symfonium properly call getSimilarSongs and use the result.

2026-02-06 11:01:20.898 Verbose SubsonicLogger  <-- [173] 200 https://xxxxxxxx/rest/getSimilarSongs.view?id=48e80e4d23740506143682b278cd4e11&count=20&u=REDACTED&t=REDACTED&s=REDACTED&v=1.13.0&c=Symfonium&f=json (260ms, unknown-length body)
2026-02-06 11:01:20.915 Verbose SubsonicLogger  <-- [173] {"subsonic-response":{"status":"ok","version":"1.16.1","type":"navidrome","serverVersion":"0.60.0 (0c8f2a55)","openSubsonic":true,"similarSongs":{"song":[{"id":"25b0b287f2bd3bfa7c6a069123139c36","parent":"4Pf5WUNaz6OuO6xUlkMYf9","isDir":false,"title":"Early Minor","album":"The Complete In a Silent Way Sessions","artist":"Miles Davis","track":2,"year":1968,"genre":"Jazz","coverArt":"mf-25b0b287f2bd3bfa7c6a069123139c36_696900bf","size":34290074,"contentType":"audio/flac","suffix":"flac","duration":418,"bitRate":651,"path":"Miles Davis/The Complete In a Silent Way Sessions/03-02 - Early Minor.flac","discNumber":3,"created":"2025-02-05T13:55:40.725647756Z","albumId":"4Pf5WUNaz6OuO6xUlkMYf9","artistId":"5dJa2S23ao1lAQokLHKFPR","type":"music","bpm":0,"comment":"","sortName":"early minor","mediaType":"song","musicBrainzId":"60fd031f-2464-4a6a-9b1f-37d27745a598","isrc":[],"genres":[{"name":"Jazz"}],"replayGain":{"trackGain":-1.69,"albumGain":-2.05,"trackPeak":0.92688,"albumPeak":0.977264},"channelCount":2,"samplingRate":44100,"bitDepth":16,"moods":[],"artists":[{"id":"5dJa2S23ao1lAQokLHKFPR","name":"Miles Davis"}],"displayArtist":"Miles Davis","albumArtists":[{"id":"5dJa2S23ao1lAQokLHKFPR","name":"Miles Davis"}],"displayAlbumArtist":"Miles Davis","contributors":[],"displayComposer":"","explicitStatus":""},{"id":"aa2209c879e48c1e2a5fa0f66cef127e","parent":"1o6raWS4J8GJCioc18Nnsm","isDir":false,"title":"Isle of Dreams","album":"Exotica Volume II","artist":"Martin Denny","track":2,"year":1957,"genre":"Easy Listening","coverArt":"mf-aa2209c879e48c1e2a5fa0f66cef127e_6969333e","size":16529210,"contentType":"audio/flac","suffix":"flac","duration":176,"bitRate":745,"path":"Martin Denny/Exotica Volume II/01-02 - 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2fast2furious · February 6, 2026, 1:30pm

Is there a difference between GetSimilarSongs ans GetSimilarSongs2?

Tolriq · February 6, 2026, 1:38pm

One is supposed to work with songs the other no

@deluan said both are rerouted, in all cases this is something for the plugin / navidrome support.

2fast2furious · February 6, 2026, 1:39pm

Ok appreciate you looking in into it! Cheers

beggi · February 27, 2026, 6:22pm

Hey @Tolriq I recently setup audiomuse-ai for my navidrome setup and its running pretty well, but I have the exact same observation as the @2fast2furious here:

The audiomuse front-end → similar song playlist, Navidrome native web front-end → instant mix based on song, and my Feishin client → track radio, all return the same playlist based on that song, so this seems to work as intended.

The audiomuse front-end → artist similarity, Navidrome native web front-end → artist aadio, and my Feishin client → artist radio, all return the same playlist based on artist similarity. So this is also consistent.

The only problem I have is in Symfonium. As OP wrote the radio in symfonium always return the playlist based on artist similarity no matter if I create it on the artist or based on a song. The result is the same as with the artist radio from the other clients and reacts to parameter changes I do in the audimuse-ai navidrome plugin. So for artist it works as intended. But for song radio it doesn’t.

Also changing the server setting to “use similar tracks for Radio mix” does not have any influance of the result at all.

May getSimilarSongs is called always with an artist ID instead of the song id, since apparently it supports both?

My expectation for the radio would be that calling it on and artist gives the same result as the navidrome artist radio and using the radio in Symfonium on a song would get the same result as the navidrome instant mix on a song.

bob32 · February 28, 2026, 3:27pm

Hi all,

I’m also experiencing the same issue with Symfonium’s Radio feature with Navidrome/Audiomuse.

To add to the troubleshooting:
I captured the network traffic with Wireshark and confirmed that Symfonium is indeed calling the correct API endpoint on the Navidrome server and that the expected list of tracks is returned in the response. However, for some reason, those tracks do not subsequently appear in the queue in the Symfonium app.

It looks like Symfonium receives the correct track list from Navidrome, but doesn’t add them to the queue as expected.
Let me know if any other logs or details would help track this down.

Thanks!

Tolriq · February 28, 2026, 3:32pm

Provide proper logs and details or an access to the server so I can reproduce.

bob32 · March 1, 2026, 12:03pm

Hi Tolriq,

As previously mentioned, I intercepted the traffic between the Symfonium app and my Navidrome server using Wireshark.

Here are the steps and findings:

I triggered “Radio Mix” on the song “Eleanor Rigby” in Symfonium.
In Wireshark, I observed that Symfonium made the correct GET request to /rest/getSimilarSongs.view with the song’s ID. Here the screenshot of all the requests:

2026-03-01_12-29-14_screenshot1694×293 131 KB

Here is the full request:

GET /rest/getSimilarSongs.view?id=I5vu9bTXYPwEooI11i5N5K&count=20&u=user&t=94903b42bb513e0a2207322deb5ba0e8&s=18782C3F9E27627810AFA901D66763D2&v=1.13.0&c=Symfonium&f=json HTTP/1.1

I have attached the JSON response (extracted from wireshark) as getSimilarSongs_response.json for your reference –> getSimilarSongs_response.json (38.0 KB)

Conclusion:
Symfonium is calling the correct API endpoint and receiving the expected list of tracks from Navidrome.

Issue:
Despite this, the returned tracks (e.g. “Just Like a Woman” by Bob Dylan, which is first in the response) are not being added to Symfonium’s Up Next queue—they do not appear in the tracklist in the app.

I have also attached my Symfonium debug.log for further details. –>

debug.json (736.2 KB) (I had to change the extension do .json because I couldnt upload .log files)

If you need any more details or logs, please let me know!

Attachments:

Screenshot of Wireshark capture
getSimilarSongs_response.json
debug.log (from symfonium app)

Thanks for looking into this!

2fast2furious · March 1, 2026, 11:23pm

@Tolriq happy to give access to my server privately if that helps.

Tolriq · March 2, 2026, 6:41am

Will be needed if it still occurs in v14.

tappsz · March 2, 2026, 11:25am

Just to add, i’m seeing the same. Can provide logs if needed…

2fast2furious · March 6, 2026, 6:00pm

I can confirm that on my system as of v14, radio mix does in fact queue up an audiomuse generated mix!
Thank you so much @Tolriq you make it really hard for a guy to have a problem with this app