Justin Bieber drops a verse and a chorus on the remix of Sage the Gemini's single 'Gas Pedal.' That's a big score for the rising Nor Cal hip-hopper, and The Biebs exudes confidence during his parts.

Sage the Gemini's "Gas Pedal" has slowly creeped up the charts. The song eventually peaked at 29 on the Billboard Hot 100, a major accomplishment for both Sage (who produced it himself) and Iamsu!, ...