Miles davis's 1969 album "biches brew" was called "fusion" because it combined a. jazz and classical. b. african and european popular music. c. bebop and hard bop. d. jazz and rock.

D. Jazz and Rock

Miles Davis album "Biches Brew" was a jazz-rock fusion. With this album he changed jazz history with his fusion style music which was considered to be revolutionary

Musical notation is a system which is used to  visually represent music  pertaining to the ear  contend  with instruments or sung by the human voice through  the employment  of written, printed, or different symbols.in the western music tradition, the sound is represented in written form through musical notation.in musical notation, the pitch is indicated exclusively by the position of notes on the lines and spaces of the staff.