Yamaha PortaSound: History and Key Facts
Yamaha PortaSound (and PortaTone) were a series of consumer-grade electronic musical keyboards were produced by the Yamaha Corporation thoroughout the 1980s, 1990s and the early 2000s.
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Yamaha PortaSound (and PortaTone) were a series of consumer-grade electronic musical keyboards were produced by the Yamaha Corporation thoroughout the 1980s, 1990s and the early 2000s.