So there's something that I am obsessed with at the moment.
This graphical representation is a great example of the construction of music, in this case a fugue (FWI, fugues are cosidered to be the most complex music form. This one is a very simple one. In a fugue there is one melodic figure that is repeated in different parts at various times. Fugues therefore have to be highly structured and the composer needs to be careful about not only the melodic pattern but also all of the underlying harmonies that will sound together. Fugues are very diffifult to write well, but when they are they sound fantastic.)
There are far too many examples on YouTube to share, but they are all amazing. Listen, watch, learn and be educated!!!!