Music has at least 5 dimensions:
- More loud, more silent – magnitude is not always linear but uses a complex formula involving number of sounds, etc.
- Higher frequency and lower – magnitude is logarithmic: The previous/next octave is 1/8 and 8/1 frequency.
- Earlier, latter beats – also called Swing, this is whether a sound is played a bit too early or too late out of order.
- Tone length – logarithmic: half, double, …
- Base frequency of an instrument,
- …
- some I maybe forget to mention right now because I am not in the mood today.
And you can add many more dimensions, even temporary.
If two instruments are the same and then divert, the magnitude of divergence itself is an extra dimension.
These two instruments combined can use the existing 5 dimensions on each to create 10 in total.
A beginner guitarist can lack in using the dimension "more loud and more silent" because there is not much room to get more silent without hiding more strokes in the resonance.
Often magnitude is the difference to previous/next in the differential function. It takes a lot of training to notice or play with that as every frequency has a different time for previous/next.
I don't play instruments, but make music with Rosegarden and Hydrogen from time to time. It is easy to start with and doesn't annoy neighbours