MTV Games and Harmonix have teamed up with McDonald’s to drop the price on select Rock Band tracks in the United States and Canada.

The tracks are as follows -

/6/08-5/12/08 :
Crushcrushcrush - Paramore
Rock 'n Roll Band - Boston

5/13/08-5/19/08 :
Shockwave - Black Tide
Sugar Magnolia - Grateful Dead

5/20/08-5/26/08:
We Care A Lot - Faith No More
All the Small Things - Blink 182

5/27/08-6/2/08:
Gimme Three Steps - Lynyrd Skynyrd
Dirty Little Secret - All-American Rejects

Source