[BUG] ncmpcpp and mpd disagree on definition of ID3 tag TPE3 #468

Describe the bug
For MP3 files tagged with TPE3, ncmpcpp now shows "Performer" as blank.

Cause: The ID3 tag ncmpcpp writes as "Performer" is TPE3. However, starting in v0.22.5 (2021/02/15), mpd defines TPE3 as "Conductor".

To Reproduce

1. In ncmpcpp's tag editor, add some "Performer" tag to an MP3
2. Although the new tag successfully wrote to file and to mpd's DB (as "Conductor"), it is invisible within ncmpcpp

Expected behavior
ncmpcpp and mpd agree on a "Performer" ID3 tag so I can use ncmpcpp to read and write it.

Desktop:

• OS: Arch
• Terminal: Bash
• Version: 0.9.2