My brother is a DJ, so he has the whole set up. His children get the added bonus at their birthday parties of a resident DJ. Thankfully my brother isn't too precious about his gear as he lets the kids add to the play list.
At my boy’s cousins' birthday party, Mr (nearly) 10 took it upon himself to become the DJ. He was playing some very funky music. In reality – he was playing. And the rest of the kids, including Miss 2 were dancing, jumping and running around.
Music adds to kids play.