-most electrically recorded 78´s: 78.26 rpm
-Edison laterals: 78.8 rpm
-several UK Columbia´s: 80 rpm (at least, according to the label)
-acoustic Victors (batwing): 76.59 rpm
-really early acoustic Victors: 71.29
-Edison DD: 80 rpm
-acoustic Columbia`s: 80 rpm
-acoustic Brunswick´s: 80 rpm
Does somebody have any additions to complete this list?
And now from theory to the real world. I noticed that some acoustic Columbia´s sound way too fast at 80 rpm, and the same goes for Brunswicks. I don´t have perfect pitch, but at 80 rpm some singers start to sound a little too high. Also, I have my doubts about those UK Columbias that say "speed 80". In several cases they clearly play too fast at 80! And what about acoustic HMV´s? Are they also supposed to be played at 76.59 rpm, just as their American sisters?
Some time ago I brought up the same subject and was advised to start at 75 rpm and gradually speed it up until it sounded natural. But that´s a little more difficult than it sounds. Like I said, I don´t have perfect pitch, and using the voice of the singer as a benchmark only works for me if it is a singer whose voice I´m very familiar with (for instance, Irving Kaufman). Also, what if there is no vocal refrain?
I once read an article about the use of a keyboard to determine the correct speed. I had some piano lessons as a kid, so I can play a little, but I found out a record can play too fast or too slow and still not be off-key! It just plays a full tone higher or lower. I thought I found a solution when I discovered old sheet music. I could just play along with the record until it sounded right. But now I´m beginning to doubt the validity of this method. For instance, I played "Three O-Clock In The Morning". It goes like this. (g c b c e g d c) (it´s three o clock in the morning). But for the orchestra on my record to play exactly THOSE notes I had to lower the plackback speed to 72 rpm, which was way too slow, obviously.
Could it be that for the sheet music sold in stores they changed the notes a little, maybe to simplify it? (Less "sharps" and "flats"). Or is it the other way around? Did the orchestra´s use very different arangements? I compared Vaugh DeLeath's version of "Sleep Kentucky Babe" with my sheet music, and hers was much higher! Maybe to acommodate the range of her voice?
Any thoughts or comments on this subject are really appreciated. Even if you say "stop being so OCD about it, just play those records and enjoy them. It´s not classical music, who cares about pitch?
