The 45 RPM record was developed by RCA Victor in 1949 as a competing format for the 33 1/3 RPM (33) format of rival Columbia records that premiered in 1948.
Eventually the 45 RPM format (7 inches in diameter with a one-inch center hole) was adopted for shorter recordings while 33 RPM (12 inches in diameter with a 1/4 inch center hole) was used for so called LP (long playing) albums. This eliminated the need to reduce the groove width or quality of 45 RPM recordings.
They typically drag because that's how they make sound. If it didn't dray there would be no music. If you mean that it sounds slow, that is because as stated above, it is part of the process. Better turntables have a strobe to adjust the timing, or speed of the rotation to keep it at 33 rpm or 45 rpm or 78 rpm. Which brings me to the next part of the answer. Make sure that the speed of the turntable matches the speed of the recording. Playing a 45 rpm record at 33 rpm will sound very slow and dragging. Most record players and turntables have a selector for 33 and 45 rpm. 78rpm records use a different needle, and not all players will play these older format records.
" In 1949, RCA-Victor developed and released the first 45 rpm record to the public, answering CBS/Columbia's 33⅓ rpm "LP". The 45-rpm record became the standard for pop singles with running times similar to 10-inch 78-rpm discs (less than four minutes per side).(One of the first of the extended 45-rpm recordings was a disc by Arthur Fiedler and the Boston Pops Orchestra featuring Tchaikovsky's Marche Slave and Ketèlbey's In a Persian Market.)" Henry Pienaar
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