When you sing with a group of people, you learn how to subsume yourself into a group consciousness because a capella singing is all about the immersion of the self into the community. That's one of the great feelings - to stop being me for a little while and to become us. That way lies empathy, the great social virtue.
Brian EnoThe Marshall guitar amplifier doesn't just get louder when you turn it up. It distorts the sound to produce a whole range of new harmonics, effectively turning a plucked string instrument into a bowed one. A responsible designer might try to overcome this limitation - probably the engineers at Marshall tried, too. But that sound became the sound of, among others, Jimi Hendrix. That sound is called electric guitar.
Brian Eno