Suzuki was born in Tokyo, Japan. In the early 1970s, he became involved with the Japanese band Hachimitsu Pie, who released one album in 1973. Later in the 1970s, Suzuki functioned as the occasional-leader and regular singer of the Moonriders—the group's first album was in fact credited to "Keiichi Suzuki and the Moonriders"—which also included his brother Hirofumi. Afterward, he collaborated with Yellow Magic Orchestra co-founder Yukihiro Takahashi as the duo The Beatniks. He was also a member of the trio Three Blind Moses.
In February 2008, Suzuki released a new solo album Captain Hate & First Mate Love in collaboration with another Keiichi, Keiichi Sokabe, touring together in late spring 2008. The follow-up Pirate Radio Seasick appeared in 2009, and the third part In Retrospect in January 2011.