I'm out of the office this week and next but I'll still be posting up the new DLC each week (sorry if I don't return PM's until I get back.)
This week at $1.99 (160 Microsoft Points) we have-
"Action" made famous by Sweet (cover)
"Last Train to Clarksville" made famous by the Monkees (cover)
"All the Small Things" by Blink 182
Credits available here.
More information on DLC and other Rock Band news here.