I know that the Bible never says that angels sing, and I believe that singing is a privilege reserved only for the redeemed. However, there's just something so "heavenly" about my little Seth's voice when he sings. He was born with a song in his heart, and has always loved to let it out. His little voice is so unrehearsed and innocent. I just adore it. I hope he never sings like a professional, and I pray that he will always delight in lifting up his voice to glorify the Lord!
(P.S. I'm a big fan of that piano player too!)