is a CD 74 minutes long because of Beethoven's 9th?

How I got here

Started with

Is the CD length really based on Beethoven's 9th?

Ended at

Compact Disc Digital Audio

The Trail

1. “cd length beethoven ninth” (google.com)
2. Compact disc (en.wikipedia.org)
3. Norio Ohga (en.wikipedia.org)
4. Symphony No. 9 (Beethoven) (en.wikipedia.org)
5. Compact Disc Digital Audio (en.wikipedia.org)

What I came away with

Maybe. Philips' own official history says Sony's Norio Ohga, who'd trained as an opera singer, wanted a disc that could hold all of the Ninth. But Philips' chief engineer Kees Immink calls that a myth, since key parts of the format hadn't even been decided when the 120 mm size was adopted. The Beethoven story is the one that stuck anyway.

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