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.
Before photography, visual arts was one of the only way to capture the world. Famous artists painted portraits of significant people and beautiful landscapes which are very time consuming. I would say photography in its early days is simply a realistic window to see the world and the people in it. The inventors of photography believed that photos are no longer drawn by hand, but "written by light".
An article on petapixel says: The use of cameras has allowed us to capture historical moments and reshape the way we see ourselves and the world around us.
The deliberate evocation of primitive power through insistent rhythms and percussive sounds is known as Primitivism.
Primitivism has its adherents favored simple, clear cut tunes of folk characters that revolved around a central note and moved within a narrow compass.
It is a fixture that you see every day in plumbers' shop windows. Whether Mr Mutt with his own hands made the fountain has no importance. He CHOSE it. He took an ordinary article of life, placed it so that its useful significance disappeared under the new title and point of view – created a new thought for that object.
