Last night on Late Night with Jimmy Fallon, Kendrick Lamar performed “Swimming Pools (Drank),” backed by house band The Roots. While it’s always a pleasure to watch Fallon’s musical guests with The Roots, seeing bandleader Questlove chime in on the song’s dank adlibs is particularly tickling. Lamar’s major label debut good kid, m.A.A.d. city is out October 22nd.