The Foo Fighters. Weird name, good sound, and tons of success. Some of their largest success has come with their recent album 'Wasting Light', which received six Grammy nominations and is still getting tons of airplay on radio all across the country. Yesterday the band released the new video for the song 'These Days' and made it available as a free download on iTunes for the rest of today!

Check out the Beatles-esque performance from Letterman below and head over to iTunes to download the official video for the new song!