in the aerosmith one you will get some songs by bands that theyve played with and were inlfuenced by like run dmc, stone temple pilots, lenny kravitz, black crowes. also, apparently you start as joe perry and unlock tom hamilton and brad whitford through the game.
while the whole aerosmith nonsense sounds interesting enough, i bet it will be the lowest selling issue in the series... i know i wont be buying it, just renting and beating it in the week i have it for. like everyone is saying, GH is great for the variety.
Also, there's supposedly another GH add-on title thats due out this spring (aerosmith is due in june). its already march so either its BS, been pushed back, or theyre kind of late getting the words out. not even a mention of what it is...