#OTD #TDIH #June21, 1926: #HBD #LouOttens! #Engineers #Inventors #Entrepreneurs #CompactCassettes #CompactCassetteTapes #CassetteTapes #Cassettes #CompactDiscs #CDs #Discs #Philips #MusicSky
www.youtube.com/watch?v=Pqmv...
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