Overview: "Painting with Sound" chronicles a watershed event in the history of music: the moment when the recording studio itself effectively became an instrument and gave rise to sounds that could never be reproduced live. Beginning with the advent of magnetic tape and multi-tracking technology, episode 2 charts the evolution of multi-track recording, and reveals how recording artists such as the Beatles, the Beach Boys and Pink Floyd used their imagination and ingenuity to transform the sound of popular music.