This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Dissonance in Bach. Example of dissonance in Bach's The WellTempered Clavier Vol Preludio XXI The chord in question was pointed out in Marquis Welton Twentieth Century Music Idioms Englewood Cliffs New Jersey PrenticeHall Inc Presumably Marquis is the source of the tempo dynamic and in the second measure arpeggiation Marquis Welton