ＲＸ (not to be confused with RX, or ℞) is a Japanese jazz/fusion band consisting of three ex-members of the 80's Japanese heavy metal band SEIKIMA-II (聖飢魔II); Yuichi "Kaijin" Matsuzaki, Shunsuke "Xenon" Ishikawa and Raiden Yuzawa. They worked with quite a few English vocalists, including John Wetton. Their name is actually a play on words, deriving from Raiden and Xenon's names' first letters respectively. Read more on Last.fm