The theme and incidental music was composed by Barry Gray. Episodes begin with either a cold open (a first for an Anderson series) or the title sequence, which sees Joe receiving a brain pattern from the BIG RAT. The opening theme is dominated by the notes of guitarist Vic Flick, known for performing lead guitar in the "James Bond Theme" from the film "Dr. No" (1962). In Anderson's biography, "What Made Thunderbirds Go!", the "Joe 90" theme is described as a "dizzying piece of psychedelic pop art that could have been produced only in the late Sixties". The closing credits are superimposed over images of objects such as Joe's spectacles and WIN badge. While the concepts for these images were photographic, the final versions were augmented with airbrush artwork.