Romantic composers, such as haydn, brahms, and beethoven, were best known for writing
a. nocturnes
b. operas
c. quartets
d. symphonies

d. symphonies

A composer who combined jazz and classical music into a new sound in the 1920s was George Gershwin (1989-1937). He was american pianist and composer. He studied classical music, but later he got interested in popular music genres, and used to compose operas, film music, concerts and symphonies. Gershwin strongly influenced many musicians, and he is considered to be a first exponent of the symphonic jazz genre. His most famous works are orchestral compositions Rhapsody in blue (1924) and American in Paris (1928), as well as opera Porgy and Bess (1935).

All of the above have been used in film noir.

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.