popular or modern musical styles in film scores in the 1960s

Film scores with either popular or modern musical styles were prominent in the 1960s. Choose one of these styles and describe at least three films that reflect this trend during this decade.

Choose 3 or more from the following films:

Psycho

To Kill a Mockingbird

Planet of the Apes

Chinatown

A Clockwork Orange

The Exorcist

West Side Story