History was made in Los Angeles tonight, as the first ever iHeart Radio Music Awards went down. Armed with a true who's who of music's biggest acts in attendance, there were some major performers to touch the stage. Among the performers tonight was Kendrick Lamar, who performed Tupac and Dr. Dre's classic song, "California Love."

Watch the performance above.

UPDATE: Watch Ariana Grande perform "The Way" and "Problem" below.

UPDATE: Usher hit the stage to pay tribute to Michael Jackson and perform his new single, "Love Never Felt So Good," which is set to be released tomorrow. Watch the performance below. 

UPDATE: Pharrell was the guest of honor tonight,as he received the "Innovator Award." He also performed a medley of his latest hits, which can be seen below. 

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