Liam and Kai love the song "Amazing Grace" and sing it multiple times a day. Don and Liam have even been recording that song in the studio. So they got the chance to sing it on stage. Kai tried backing out earlier in the day. But in the end, he got on stage and sang because I bribed him with a sucker.
They did a great job! I felt so proud of my boys. I look forward to many years of them learning and enjoying music with their dad. So for anyone who missed it (or want to see it again)--here it is.
(Recorded with an iPhone. So again, not top notch quality.)