Sweden

When DJ-producer Avicii died by suicide last year, the music world mourned its sudden loss of the 28-year-old Swedish talent.

For the electronic artist's friends tasked with seeing his posthumous album to the finish line, the creative process presented a particular challenge.

Swedish producer Carl Falk, Avicii's close friend and collaborator, says he was paralyzed with grief he associated with manipulating his friend's music.