What metadata can I put in a recording?

You can put any recording and composition related metadata in a recording
 
The following metadata can be added to a recording:
 
Title
Subtitle
Primary artists
Featured artists
ISRC
ISWC
BPM
Duration
Artwork
Audio files
Writers
Composers
Producers
Lyrics
C line
P line
Catalog number
Record label
Master rightsholders
Publishing rightsholders
Is instrumental
Is explicit
Contains samples
Track type
Language
Production year
Release date
Preview start
Type
Genre
Subgenres
Moods
Description
Tags