Petrolz
Ryosuke Nagaoka (長岡 亮介, Nagaoka Ryōsuke, born October 7, 1978), is a Japanese musician, and singer and guitar player for the band Petrolz. Under the stage name Ukigmo (浮雲, Ukigumo, "drifting cloud"), he was the second guitarist for Ringo Sheena's band Tokyo Jihen from 2005 until 2012. In 2013, Nagoka joined the band Gokumontō Ikka, a project involving Queen Bee leader Avu-chan.
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