At what point can you hear a Fast or Slow Table?

A fast or slow turntable will affect the pitch of the music. The accepted standard today is 440 Hz for middle A, but there has been wide variation throughout history, and even some variation today.

See http://www.uk-piano.org/history/pitch.html.

There was an international squbble once about the pitch of the Vienna Opera. It was too high, said many Divas, and bad for their voices. Musicians know that tuning just a bit high makes the music sound more exciting, and some do it on purpose.

Monk: Gosh, after more than 40 years of listening seriously to jazz, collecting more than 5000 recordings, and teaching a college course in jazz appreciation, I thought I WAS a REAL JAZZ LISTENER. Don't know how I could have been so ignorant about the off-pitch on "Kind of Blue", but I apparently had company -- none of the other REAL JAZZ LISTENERS that I knew were aware of the recording anomaly until around 1990. But I guess we're NOT REAL JAZZ LISTENERS up here in the Pacific Northwest...