An explicit track is one that has curse words or language or art that is sexual, violent, or offensive in nature. It is up to you if your music should be marked as explicit. If you mark one track as explicit on your album, the entire album will carry the explicit tag.
If the content of your release is determined to be explicit by iTunes (this includes artwork) and is not marked as explicit, your release may be hidden from sale in the store.
Explicit content is not sold in Burkina Faso, India, Nepal, and Uzbekistan iTunes territories.
A clean track is one that does not contain curse words or language or art that is sexual, violent , or offensive in nature. Tracks should ONLY be marked as clean if there is another version of the same track and it is marked as explicit.
Clean versions of explicit tracks must be flagged as clean to prevent customers from accidentally purchasing an edited version. Tracks must only be flagged clean if there is a corresponding explicit version of the track.