N.E.R.D is back.

Seven years after their last album Nothing, the trio of Pharrell Williams, Chad Hugo and Shay Haley reunite and unleash a brand new single called “Lemon,” featuring a rapping Rihanna.

In addition to the track, the group dropped a visual they are called a “tutorial”. In it, Rihanna shaves a woman’s head before that small woman breaks into a dance sequence.

N.E.R.D will reunite on stage at ComplexCon this Saturday (Nov. 4). They are also prepping a new album, though details have not been revealed.