A is the crest, B is the trough, C is the wavelength, D is the amplitude, and E is the decibals
Those are scales. the highlighted notes (aka the guide tones) are notes in that specific chord that give a harmonic pull towards the next chord. generally they are the 3rd and 7th note (that’s what determines what type of chord it may be: major, minor, major-minor, or dominant). they are the most harmonically important notes in the chord since they determine the quality of the chord itself, so make sure they are in perfect tune.
Fabric Lenny has been working creatively throughout the UK in a variety of art forms for over 20 years. Although primarily concerned with drawing and the meandering line, he has collaborated with dancers, musicians, photographers and other visual artists in the creation of interesting visual meanderings which are candy for the eye and musings for the soul. His recent collaborations have taken him to Europe and North America, where his work has been exhibited alongside his live drawing performances. fabric lennys full name is victor lenny