The process is called "Pure Pleasure" and it was invented and perfected by a mysterious group calling themselves The Legion of Rock Stars. The Pure Pleasure Process entails a band listening to songs with 30db blocking headphones and attempting to play the songs at the same time. The band can not hear their own instruments or performance, only the original composition. The results are often hilarious as this sample of the Legion's "best" work displays. More information about The Legion of Rock Stars and The Pure Pleasure Process go here. To hear their reworkings of classics by The Beatles, Loverboy, Human League and more, click the link below.