Photo of Kendrick Lamar performing on 'Tonight Show,' by Douglas Gorenstein

Just over a month before next month's Grammy Awards, pack leader Kendrick Lamar appeared Thursday night on The Tonight Show Starring Jimmy Fallon, where sat down for a brief chat and performed a new song simply called "Untitled 2."

» Grammys Should Televise Best Rap Album Award

Lamar leads this year's Grammy nominations with 11 nods, one short of Michael Jackson's 1984 all-time record. The ceremony is set for Feb. 15 at STAPLES Center in Los Angeles.

Watch Lamar's incredible Tonight Show performance below.