I share the physical and spiritual needs described so far. Most of my social life is spent with people who share those needs, whether centred around folk singing/jamming, singing a cappella (barbershop) or handbell ringing. Most of the performing I do is for audiences who are comfortable with live acoustic music and they embrace the give and take. I cannot imagine living in the world any other way. I, too, get "twitchy" or "off" when I don't make music with people. Listening preferably to live music (recorded is a helpful stop-gap, particularly those that remind me of previous live experiences) is important to my sanity and physical health, but making music is the foundation of both.