Was there a sinister force behind the death of young singer, Avicii, who reportedly took his own life, and would he be a good channeling interview subject?

This indeed was sinister. He was the victim of mind control manipulation. It was because of his great popularity with young people as well as his highly spiritual focus and intuitive reach which made him dangerous as a creative force drawing on the reality of human subjugation for subject matter to focus on with his songwriting. He was describing things too accurately and keying in on issues of high sensitivity to the Cabal. They are always interested in suppressing anything that benefits humanity, even as entertainment, but especially so when there is upliftment that could work against their dark plans by making people more resilient and better able to cope with adversity and stand strong, so this would be a very worthwhile channeling subject.