Last summer, Wavves played the Primavera Festival in Spain, but didn't finish the set, and canceled his European tour the day after. In an online apology, Nathan admitted to "mixing Ecstasy, Valium, and Xanax before having to play in front of thousands of people." It may not be his proudest moment, but it's definitely one of his most memorable.

LISTEN: Wavves "Friends Were Gone"