Scale D is a b flat major. It starts with a b flat
Aesthetics (/ɛsˈθɛtɪks/; also spelled æsthetics and esthetics also known in Greek as Αισθητική, or "Aisthētiké") is a branch of philosophy that explores the nature of art, beauty, and taste, with the creation and appreciation of beauty.
Which Important group of keyboard pieces did Bach write to helpincrease the skill level of his students is because of the Well-Tempered Clavier.