Category: trivia

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What does “deep groove” mean?

If you’re interested in 50s and 60s jazz, you’ll probably encounter the phrase “deep groove” at some point, especially in relation to LPs on the Blue Note label. This can be confusing for beginning...

1949 RCA 45 0

Fun facts about forty-fives (number one)

When RCA Victor introduced the 45 rpm record in 1949, they introduced an exciting new feature. Instead of just boring black vinyl like Columbia’s LPs, their records were coloured vinyl. Not only that, but...

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Why do 45s have large holes?

  A friend recently asked me why 45s have larger center holes than LPs. For her benefit, I’ll start with the short answer. RCA versus Columbia In 1948, Columbia introduced their 33 1/3 rpm...

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Dinking. Yes, dinking.

So, you know how some 45s have those big center holes? Well, they didn’t start out that way. They were pressed with a small center hole and then dinked. Dinking is a form of...