Overtone Demo.

;(use 'overtone.live)

;; It's easy to demo a sin wave
(demo 2 (sin-osc 440)

;; If I define my own instrument
(definst my-sin [freq 440]
  (sin-osc freq))

;; Trying to demo it causes it to run until stopped
(demo 2 (my-sin))
(stop)