Guitar Hero IV to include song creation, multiple instruments

Guitar Hero IV will feature the ability to make songs, and will allow drums and vocals as well as bass and guitar, according to the latest issue of Game Informer.

It's not known yet whether or not the game will be compatible with Rock Band peripherals.

From Shacknews:

The song creation functionality will somehow allow users to customize everything but vocals, though the specifics of this remain unclear. Users will apparently be able to upload and share songs on all platforms, and will even be able to create their own album art.

Four bands have been confirmed thus far for the game--Van Halen, The Eagles, Linkin Park and Sublime--with Neversoft noting that all songs within the game will be master tracks provided by record labels.

More through the link.