In answer to the question... yes - if you play 4 notes a beat at 150 the metronome is clicking once for each beat, and you are playing 4 notes - 1 on the beat, and then another 3 in time before the next click. That would be 600 notes a minute.
usually when people talk about playing at 180bpm they are playing quarter notes (4 per beat) at 180bpm...
If you can play 4 notes a beat at 210bpm, that will probably be fast enough... :cool:
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