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Rpm


1949 1st 45 RPM record released

1949 RCA releases 1st single record ever (45 rpm)

1949 RCA introduces 45 RPM record

1948 33 1/3 RPM LP record introduced (DR Peter Goldmark-Columbia Records)

1948 Columbia commits to 33 1/3 rpm records, plans to phase out 78's as Dr. Peter Goldmark of CBS demonstrates "long playing record"

1934 RCA Victor re leases 1st 33 1/3 rpm recording (Beethoven's 5th)


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