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I found a piece of sheet music that appears to be old, that looks very similar to the one in the picture, however there is only one man (the one on the right of this picture). The Picture I have has a signature on it by an "Isabelle Burner" or "Isabelle Burrer". Can anyone tell me something about this? Or who "Isabelle" is in relation to "i wonder what's beecom of Sally"