Just a quick thought about the marketing target for these passes. These passes aren't going to be tempting to people with at most only a casual interest in an artist, so the music labels shouldn't expect sales from them. On the flipside, die-hard fans will buy everything from a given artist anyway, so the music labels would be better off letting them buy at regular prices ("guaranteed" to cost more than the pass). Therefore, their target audience is very narrow: people who will buy the pass and would have purchased less of the artist's future work without it.
