Foobar 2000 mobile

Version 1.2.1 ARM 64-bit

One of the veterans of Windows audio players has become mobile.
It is freeware.
It has its own forum.

Navigating

You can browse by the usual tags as Album, Album Artis, Genre, etc. but also by folder.

You can also search.

The composer tag is supported as well.

If you select a composer, you get albums.

I mentioned this because often tracks are returned sorted by number.
In case of classical  totally useless.

DSP

Extensive DSP options including EQ and crossfeed.

UPnP

UPnP is supported as well.
You can use your mobile as a renderer (browsing and playing music stored on a UPnP server).

Verdict

A versatile and reliable audio player.
Supports the composer tag in the right way making it suit for selecting classical.
Its advanced search also support tags like Conductor, Chorus, Orchestra, Soloist and Instrument.