Oliver Tree, the eccentric singer known for viral hits like “Alien Boy” and “Life Goes On,” has died at the age of 32 following a helicopter crash in Rio de Janeiro.

The two helicopters crashed in Rio de Janeiro on Sunday, killing at least six people, the authorities said.

American singer and comedian Oliver Tree was listed as a passenger on one of two helicopters that collided midair and crashed Sunday morning in Brazil, killing all six people aboard, authorities said.