D Arditi (2014). "Digital Downsizing: The Effects of Digital Music Production on Labor". Journal of Popular Music Studies. 26 (4): 503–520. doi:10.1111/jpms.12095. hdl:10106/27051.
"Ace Tone Rhythm Producer FR-15". ESTECHO.com. 17 December 2016. — Sakata Shokai/Ace Tone Rhythm Producer, a successor of Rhythm Ace after the reconstruction of Ace Tone brand in 1972, provided feature to modify the pre-programmed rhythms.
D Arditi (2014). "Digital Downsizing: The Effects of Digital Music Production on Labor". Journal of Popular Music Studies. 26 (4): 503–520. doi:10.1111/jpms.12095. hdl:10106/27051.