I like our arguments...you need something to phase to...the boy playing the piano (whose tempo is not always constant and is variable)..does it make sense to have the metronome without the player playing the piano..makes a nice syncronized beat - but it is not music (whose tempo can change based on music notes (instructions) or an instructor (tempature, voltage, etc.).

We have A,B,C (which apparently are the source for the high speeds)...they add D the metronome and say ours is different because of the metronome that apparently helps to phase between the two (provides general parameters). Does D make any sence without A,B, & C? Does D produce the underlying processing speed? I don't know if D "improves" what A,B, & C provides or if it matters if it does - Does it matter if it still relies on A,B, &C to produce the music?