Reminder: due to music re-licensing, several songs will be removed from the Rock Band Music Store at the end of this week. If you already own these songs, nothing will change. If you don't have them yet, this is your last chance to pick them up.
The songs are:
Crooked X - "Rock 'n' Roll Dream"
Die Toten Hosen - "Hier Kommt Alex"
Les Wampas - "Manu Chao"
The Material - "Moving to Seattle"
Them Terribles - "Bullets & Guns"
Tokio Hotel - "Monsoon"
Vesuvius - "Promised Land"
One of these songs is required for a Rock Band 3 achievement. Please read the FAQ and additional information on the Rock Band forums to get all the details on re-licensing and the achievement.