Yes!
You can sell your instrumentals with Anti-Joy as long as it's your music and you have the necessary rights to sell it and blah blah blah.
IMPORTANT NOTES
They must not be repetitive (meaning it needs to have some structural progression throughout)
It must not be too simple
Do not reuse samples for multiple releases
Do not flood with a lot of similar releases
It shouldn't be identical or very similar to other already-released songs
Stores are generally very sensitive about instrumentals, as they are often involved in artificial streaming.
When uploading an instrumental, select "Instrumental" under the "Instrumental?" section, like so:
