If I like a song like the Verve's Bitter Sweet Symphony or an old song like Radar Love by Golden Earring I will buy it by itself on iTunes. There is no way I would buy an entire album by an artist like that. I have a lot of tracks on iTunes which come from Greatest Hits albums (and a lot of those are one hit wonders). I only buy entire albums by artists I really like. Similarly with artists my husband likes; I have a couple of Blue Oyster Cult tracks on the iPod. There was no way I was going to put every single album he has by them on there.