Claim: Cannonball in Japan is recorded in Tokyo on August 1990 and Adderley is backed by his best band.
Evidence: Cannonball in Japan is a live recording by the Cannonball Adderley Quintet at the Sankei Hall in Tokyo which was first released on the Japanese Capitol label in 1966 before being more widely released on CD in 1990. 
Recorded in August 1966 in Tokyo, In Japan features the alto saxophonist at the peak of his career.