Clementine [1] is pretty cool. It does everything I need:

- cross-fading between songs

- a real queue that is separate from the playlist so you can program what plays next and in which order easily (CTRL+D to add / remove, and a advanced window can show the queue)

- a remote control with an Android app

- stop after this song

- a giant search / filter bar. It does not has to have the focus to start searching, just type when Clementine is the active window

- MPRIS integration (obviously)

- several playlists open at the same time

- the mood bar

It also has:

- tag editing

- integration with many online services

- a library handling that does not get in the way but full-featured anyway

- support for removable media

It's awesome. It could use some pretty some improvement for its look, but it is pretty decent and does the job.

It's a fork and a continuation of Amarok 1.4.

[1] https://clementine-player.org/

I use mpv. It's primarily meant as a video player but it works well for music too and even as an image viewer (alternative to 'feh') There is a pretty active community of people writing scripts for mpv (Lua or JS) and it's generally really nice for users with a hacker ethos. I consider it the Emacs of multimedia.

(I wouldn't recommend it for casual users, I tell family members to use VLC.)

deadbeef (https://github.com/DeaDBeeF-Player/deadbeef) tries to be a foobar2k clone of sorts, and while it's nowhere close (foobar2k is just really damn good), it's alright for what it is: a basic GUI playlist manager that plays on-disk music.

The bare-bones experience is kind of nice, to be honest, as my listening habits don't really need much functionality beyond "load a folder of music, respond to media key inputs, and scrobble to last.fm".

MPD on linux + Android MPD client as the the GUI works well for me.

Audacious is still top notch imo.

There are a million music apps for linux. What exactly are you looking for?

*Amarok