Experimental rock
Martin argued that the advancing technology of multitrack recording and mixing boards were more influential to experimental rock than electronic instruments such as the synthesizer. He allowed the Beatles and the Beach Boys to become the first crop of non-classically trained musicians to create extended and complex compositions. Drawing from the influence of the Beach Boys' Brian Wilson and the Beatles' George Martin, music producers after the mid 1960s began to view the recording studio as a musical instrument used to aid the process of composition. When the Beach Boys' Pet Sounds (1966) was released to a four-month chart stay in the British Top 10, many British groups responded to the album by making more experimental use of recording studio techniques.