computer generated music, with unintentional hiss :-( . IMO the best bit is around 2:50-3:50.
two bouncing ping pong balls
Three-year-old male child laughing.
My daughter 20 months old laughing about me while joking with a balloon in front of her.
Fanny at home, happy during violin practice. ZoomH4, low gain
12 years old children laughing happily in a studio.
Ringing a bell sounded happy.