Form as content. The subject of so many songs is the art itself...
→[More:]
"I Wanna Rock'n'Roll", "I love Rock and Roll", "Hip Hop" (Dead Prez) or any one of a million rap tracks where the content is how great a rapper the artist is are all examples. This is not confined to western music, but I am most familiar with it.
My question is, does this exist in other art forms? I know it exists in poetry (especially sonnets), but does it exist in paintings or sculpture? Architecture?