Guests open 'Christmas Carol Week' on 'The Colbert Report'
Rocker also reveals details of project with Beats By Dre
Icona Pop, Santigold, Fleet Foxes also contribute songs
Lamb of God frontman faces manslaughter charge in Czech Republic over 2010 incident
Guests Drake, 2 Chainz and Kendrick Lamar join the young Harlem hotshot
Portland group becomes elementary school music teachers
Korean pop star performed for Obamas after issuing apology
Rocker succumbs to cancer after two-year battle
Singer will appear in ad and receive money for creative projects
Rocker says Them Crooked Vultures may hit the road again
Philadelphia singer-songwriter shares holiday cheer
Funk master, rapper get mashed up for 'Django Unchained'
Guests will join rockers for pay-per-view special December 15th