Good reasons why you shouldn’t write a sample of LOST if you want to work on LOST.
QandA
Robert Mckee
Internalize what makes sense to you and chuck the rest. Anyone who tries to convince you that theirs is the One True Way is deluding themselves and you.
Scripts sold
There are resources for finding out what scripts sold for what, but verifying the truth is another story.
Getting rights to a concept album
Copyright almost certainly rests with the songwriters, so start there.