Nakanishi Ryousuke, born on March 6, 1976, is a Japanese composer, arranger and sound producer from Tokyo. He is the managing director of ARTUS (a music composition and production unit).

He sometimes goes under the alias "R-midwest".

Facebook: facebook.com↗（在新視窗開啟） ARTUS: artus.co.jp↗（在新視窗開啟） VGMDb: vgmdb.net↗（在新視窗開啟） Japanese : ja.wikipedia.org↗（在新視窗開啟）