Masami Tsuchiya (Japanese: 土屋 昌巳, Hepburn: Tsuchiya Masami) is a Japanese singer-songwriter, musician and record producer. He rose to prominence in the late 1970s as lead vocalist and guitarist of the rock band Ippu-Do. Following their disbandment in 1984, Tsuchiya focused on his solo career and formed several short-lived bands with well-known musicians. He has also participated in various collaborations and produced recordings for acts such as Glay, Blankey Jet City, and The Willard.

Tsuchiya's career in music started with a brief stint aged 17 in 1969 as a roadie and stand-in guitarist with The Golden Cups. However, it was discovered that he had lied about his age when his family tracked him down so he was forced to leave the band.^[1]

In 1972, Tsuchiya was recruited by Nobu Saito to work as a session guitarist, going on to record and tour with Lily and the Bye Bye session band (one of the other members was Ryuichi Sakamoto) and became a regular member of Junko Ohashi and Minoya Central Station, leaving in 1978 with the formation of Ippu-Do. Since 1982, Tsuchiya has worked with artists as diverse as English new wave rockers Japan and Bill Nelson, Japanese electronica composer Ryuichi Sakamoto, Duran Duran side-project Arcadia, and Japanese rock singer Atsushi Sakurai.

In 2001, Tsuchiya formed the short-lived group The d.e.p with Vivian Hsu, Mick Karn, Masahide Sakuma and Gota Yashiki (both formerly of the Plastics).^[2] They released the album Shinkei Stop that year.^[3]

In March 2008, Tsuchiya formed another short-lived rock band, Vitamin-Q with Yashiki, Kazuhiko Katō, Rei Ohara and Anza. It ended after Kato's suicide on October 17, 2009.

In June 2010, following news of former collaborator Mick Karn's cancer diagnosis, Tsuchiya reunited with The d.e.p and recorded two songs for a proposed September 2010 release to raise funds for Karn and his family.^[4]

In early 2013, Tsuchiya formed the supergroup KA.F.KA with Issay (Der Zibet), KenKen (Rize), Motokatsu Miyagami (The Mad Capsule Markets), and Ken Morioka (Soft Ballet).^[5] Koji Ueno (Thee Michelle Gun Elephant) later replaced KenKen on bass. Tsuchiya's record label, Mazzy Bunny Records, released Swan Dive in November 2013, his first solo album in 15 years.^[6]