The foundational texts of video game music were written by Koji Kondo. His work on Super Mario Bros. (1985) is the most cited example of the "Latin rhythm" influence in early gaming. The "Ground Theme" utilizes a calypso beat over a standard 4/4 time signature. Super Mario Bros. 3 (1988) represents the zenith of the NES's audio capabilities, particularly in its use of the DPCM channel for timpani and complex percussion samples.