Oliver Tree , the musician and comedian behind pop hits like “Miss You” and “Life Goes On,” has died, reports the Associated Press . Tree was reportedly on board one of two helicopters that collided mid-air this morning in Rio de Janeiro, Brazil. One of the helicopters crashed into several electronic vehicles in a car dealership’s parking lot, igniting a fire that was later extinguished, according to local police and fire departments. All six people aboard were killed, including DJ and producer