yup, it's van halen in 1976 doin a stevie wonder cover.

Ya kinda get what I mean though.
It's like the movie business. There's a whole list of credits at the end that lists the people who've contributed to the making of it. When you buy a CD, you're not just buying a piece of plastic, you're supporting the band and everything that makes them what they are.
If everybody had snuck into the theatres to see the original Matrix... there would never have been a 2nd or 3rd movie coming out this year.
If you don't pay for music, the bands you're going to be listening to in the future are going to be more like movies of the week rather than big blockbusters.