Harmonix and MTV Games will be releasing 16 tracks this week for Wii Rock Band.

Three songs each from West Coast favorites Weezer, alternative rockers Nine Inch Nails and punk staples Dead Kennedys will be added this week. Additionally, songs from Testament, Staind, Dashboard Confessional and more will be released June 23 to the Wii Rock Band Music Store.
 
These tracks come from the back catalog of Rock Band music already released to owners of Xbox 360 and Playstation 3 system. Wii fans can expect a rollout of previously released downloadable Rock Band content until the entire back catalog of more than 700 songs is available.  With the addition of these tracks, there are now more than 330 tracks in the Wii Rock Band Music Store.

The tracks are:
The Cab - One of Those Nights
Dashboard Confessional - Hands Down
Dead Kennedys - California Uber Alles, Holiday in Cambodia, Police Truck
Free - All Right Now
Nine Inch Nails - Burn, Capital G, Last
Scars on Broadway - They Say
Staind - This Is It
Testament - Electric Crown
thenewno2 - Yomp +
Weezer - Dreamin, The Greatest Man That Ever Lived, Troublemaker