This has to be my favorite harmonica video of all time. I was visiting Gibbs Farm in New Zealand when I discovered this giant tensile sculpture by artist Anish Kapoor and was cosmically compelled to play into its echoing maw. What a beautiful sound! As I played, a flock of young school children who were visiting quickly joined me at the edge of the sculpture and, with the slightest of prompting, joined in as my impromptu percussion section. What joy! They were laughing and dancing and staring in wonder at the music flowing from between my cupped hands. I think this video speaks volumes to rule #1 of playing the harmonica: keep a harmonica on you at all times! Have a listen and enjoy. And the next time you find yourself in an acoustically wonderful place, pull out your harp and blow a tune!
Harmonica Love Affair 
ha! this is ridiculously outstanding.