Disturbed - "Indestructible", "Voices", "The Game", "Stricken"
No Doubt- "Spiderwebs", "New", "It's My Life", "Don't Speak", "Just a Girl"
Blink-182 - "Adam's Song", "All The Small Things", "What's My Age Again"
The Police - "Message in a Bottle", "So Lonely", "Roxanne"
The Who - "Behind Blue Eyes", "Who Are You","My Generation (Live)"
Metallica - "Blackened", "Ride the Lighting"
Foo Fighters - "My Hero", "Best of You"
Boston - "Peace of Mind", "Rock and Roll Band", "Smokin'"
Red Hot Chili Peppers - "Snow ((Hey Oh))", "Suck My Kiss", "Scar Tissue", "Breaking the Girl"

I think these should get pro guitar upgrades considering these ARE the best selling artist in the Rock Band series. If harmonix can do one more awesome among these 3 songs one pro upgrades a week times, I'd like them to upgrades these songs.