It's Stephen Colbert's first week of shows as a late night TV host (not in character) as he takes over the reins from David Letterman at CBS and his team certainly knocked this musical booking out of the park.
Rapper of the moment Kendrick Lamar, who was also The Colbert Report's final musical guest, dropped by to perform. And he didn't stop at one song, instead delivering a medley of tunes from this year's To Pimp A Butterfly, a record that's sure to top a huge amount of critics' end-of-year lists come December.
Proof positive that he is one of the most engaging, talented hip-hop artists on the planet, check out the Compton star killing it below.
'Wesley's Theory', 'Momma', 'King Kunta' and 'u' all feature.