Sunday, June 11, 2006

Why is a CD 76 minutes, 30 seconds long?

Was watching "History of Pop" late yesterday afternoon on tv. Kim Clarke Champniss
KCC runs Invisible Republic Incorporated, a music management and television production company. Most recently he was the Ontario Government's consultant for the highly successful Concert For Toronto. He is a contributing producer to Bravo's Arts & Minds show. In addition, Kim teaches a history of popular culture at The Harris Institute in Toronto.

He had interesting info regarding the size of a cd. You know, a music disc. Here is why it is the size that it is... (he said 76 1/2 minutes, but oh well...)

During development the target storage capacity for the CD was sufficient for one hour of audio content, and a disc diameter of 11.5 cm was sufficient. However, according to Philips, Sony vice-president Norio Ohga suggested extending the capacity to 74 minutes to accommodate a complete performance of Beethoven's 9th Symphony on a single disk. (KCC said it was because it was this guy's favorite piece)

The Symphony No. 9 in D minor, Op. 125 is the last complete symphony composed by Ludwig van Beethoven. Completed in 1824, it includes part of the ode An die Freude ("Ode To Joy") by Friedrich Schiller, with text sung by soloists and a chorus in the last movement. It is the first example of a major composer using the human voice on the same level with instruments in a symphony.


There you have it. To make sure that "Ode to Joy" could fit on a cd. :-) I love that piece, even had it played at my wedding back in '81. Well, the music has lasted, even if the marriage didn't! LOL
TTFN

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