The idea that Bruce Springsteen wrote, recorded and ultimately shelved entire albums of music may seem odd to the casual listener. Why put yourself through all that work for nothing?
Yet "lost albums" are embedded in music industry lore. Some were literally lost. Some remained unfinished or unreleased because of tragedy, shortsighted executives or creators who were perfectionist - or had short attention spans.
Often, the music is eventually made public, like Springsteen is doing now, although out of context from the times in which it was originally made.
So in honor of Springsteen's 83-song "Tracks II: The Lost Albums" box set being released Friday, The Associated Press has collected 10 examples of albums that were meant to be but weren't.
"Smile," The Beach Boys