A tragedy struck the music world yesterday as popular alternative artist Oliver Tree died in a helicopter crash in Brazil. The singer-songwriter, along with five others, died on Sunday after two helicopters collided midair and crashed in Rio de Janeiro. Tree, who boasts over 11 million monthly listeners on Spotify and is best known for songs like “Miss You” and “Life Goes On,” had performed in Sao Paulo and was set to perform a European tour beginning July 1 in Lisbon.