Silly question but how do you know how to set the bpm on a metronome looking at sheet music? I'm working my way through the suzuki book with my son and was practicing last night and thought maybe it would be good to set up the metronome to see how well I can keep the time. I see the time signature but I'm not sure how that translates? Seems like the time signature doesn't really affect the bpm, is that right?