Optical disc of light. An early optical disc system existed in 1935, named . An early analog optical disc used for video recording was invented by David Paul Gregg in 1958 and patented in the US in 1961 and 1969. This form of optical disc was a very early form of the DVD (). It is of special interest that , filed 1989, issued 1990, generated royalty income for Pioneer Corporation's DVA until 2007 —then encompassing the CD, DVD, and Blu-ray systems. In the early 1960s, the Music Corporation of America bought Gregg's patents and his company, Gauss Electrophysics. American inventor James
Close (to the Edit) song "Beer Barrel Polka", as performed by The Andrews Sisters. The short spoken-word vocal and the "Hey!" sample - used in a number of songs most notably in "Firestarter" by The Prodigy and "Back in the Day" by Christina Aguilera (uncredited) - was the voice of Camilla Pilkington-Smyth. The single was released in the UK on what had become ZTT's customary array of formats: standard and picture disc 7" versios, five 12" singles (one a picture disc) and a cassette single, each featuring a number of unique mixes. The many remixes were given their own titles derived from the overall