(AllHipHop News) Back in December Kendrick Lamar teamed with Reebok for the “I Am” video presentation. The two brands joined forces again last night for a surprise concert in West Hollywood. The only prior information about the event came via K. Dot’s Twitter page at 8 pm local time.

[ALSO READ: Kendrick Lamar Partners With Reebok; Recites “I Am” In Promo Video]

9pm. meet me here. 8950 Sunset Blvd. 930pm. meet me here. 8466 Melrose Ave.

— Kendrick Lamar (@kendricklamar) March 25, 2015

It turns out the TDE rapper was inviting fans to see him perform on top of a moving flatbed truck. Kendrick ran through tracks from his albums good kid, m.A.A.d. city and To Pimp A Butterfly. He also did a cover of 2Pac’s classic “Hail Mary.” The shocking set-up was reportedly part of Reebok’s #GetPumped campaign.

[ALSO READ: Kendrick Lamar Moves 318K; First Week Sales]

Watch footage from Kendrick Lamar’s surprise concert below.

Kendrick Lamar performing "Hail Mary" by 2Pac pic.twitter.com/v8f6lNgLon

— HIP HOP FACTS (@DailyRapFacts) March 25, 2015

Oh ? @kendricklamar

A video posted by Emile Haynie (@emilehaynie) on Mar 24, 2015 at 9:23pm PDT