Topically, Harmonix and MTV will add a trio of songs by The Presidents of the United States of America to Rock Band on 4th November.
"Dune Buggy", "Ladybug" and "Feather Pluck'n" are the tracks in question. No price is mentioned, but the usual tag of 160 MS Points (GBP 1.36 / EUR 1.92) each, or 440 MS Points (GBP 3.74 / EUR 5.28) as a bundle is expected.
Remember, Rock Band DLC works in both Rock Band 1 and Rock Band 2. The latter, of course, is only available in the US at the moment.
The Presidents of the United States of America are not real political leaders, silly, but a quirky rock band known best around here for the songs "Peaches" and "Lump". The latter is included in Rock Band 2 and its upcoming competitor, Guitar Hero World Tour.