Cover version - Wikipedia: "In popular music, a cover version or cover song, or simply cover, is a new performance or recording of a contemporary or previously recorded, commercially"
A: "Dude, your playlist is entirely made up of lame ass cover-covers of that old Tears for Fears song. Are you trying for emo kid of the year or what?"
B: "What are you talking about?!? Donnie Darko is awesome!"
By Nike
Cover
A version of a song that is done by another band than the original.A band can cover another band's song.
To help someone out by
1) filling in,
2) backup their excuse
3) going along with their lie,
cosign for them, corroborate their story
4) provide supporting firepower for
them in a shootout {Hollywood}