Electronic music pioneer Robert Moog, born 73 years ago today, got started in the business while still a grad student at Cornell, writing an article on building theremins for Electronics World and selling a good number of theremin kits for $49.95.

“We had $13,000 in the bank, a humongous cache of wealth for a graduate student back then!” (Salon)

Later he went on to create the synthesizer which bears his name. Moog passed from this plane in 2005.

In celebration of Moog’s contributions to electronic music, check out these theremin kits (kudos Make). Then build something and play.