This week, the Rock Band Network introduced the option for anyone with a tune to try to get their songs added to the Rock Band shop. Seattle indie label Sub Pop has already said they’re interested and many labels are sure to follow. Sub Pop A&R executive Tony Kiewel is an avid Rock Band aficionado and said the storied label is investing in equipment this week to turn songs into playable tracks. Sub Pop albums like Nirvana’s Bleach or the new record from the Shins could be part of Rock Band by Fall should the game accept the tracks for sale.