Indie rap star El-P stopped by Late Show With David Letterman to perform a new song from his forthcoming project Cancer4Cure. Back on his solo tip after his contributions to Killer Mike’s R.A.P. Music, the Definitive Jux founder went in with “Stay Down,” featuring a guest appearance by Nick Diamonds of Islands. Watch the clip that has both Letterman and Paul sounding pretty impressed by the performance.

[via TheAudioPerv]