Confirmed songs:
Metric, “Combat Baby”
Rilo Kiley, “Portions of Foxes”
Them Crooked Vultures, “Dead End Friends”
The Vines, “Get Free”
The White Stripes, “The Hardest Button to Button”
Phoenix, “Lasso”
Ida Maria, “Oh My God”
Juanes, “Me Enamora”
Jane’s Addiction, “Been Caught Stealing”
Smash Mouth, “Walkin’ on the Sun”
Spacehog, “In the Meantime”
Stone Temple Pilots, “Plush”
Dio, “Rainbow in the Dark”
Huey Lewis and the News, “The Power of Love”
Joan Jett, “I Love Rock and Roll”
Night Ranger, “Sister Christian”
Whitesnake, “Here I Go Again”
The Cure, “Just Like Heaven”
Ozzy Osbourne, “Crazy Train”
Queen, “Bohemian Rhapsody”
Jimi Hendrix, “Crosstown Traffic”
The Doors, “Break On Through”
I initially missed the detail that there's Pro difficulty for drumming too. Actual differentiation for the cymbals, as opposed to now where the cymbals and toms are equivalent except during fills.
Game journalist/guitarist quote regarding Pro guitar UI: "like trying to read tab notation on a piano roll going a hundred miles an hour." Since you're playing the 100% real guitar part, you'll of course have to learn the song legit, with the scrolling UI as just a reminder.
So where's Pro bass? I'd rather mess around with that first both for simplicity and since I already have a couple years of RL bass under my belt.