“On the Velvet Underground's self-titled 1969 album, "I'm Set Free" is a moment of catharsis. The chorus is sung from the gut, and after the band belt the title a few times, Lou Reed gently sings, "I'm set free to find a new illusion." The song's chorus alone is a good fit for Brian Eno, who has often lauded the cathartic and emotional health virtues of singing. "I believe that singing is the key t”