Rauli Badding Somerjoki (August 30, 1947 – January 14, 1987) was a notable Finnish singer, composer, and lyricist, born in Somero, Finland. He is best remembered for his hit songs such as "Fiilaten ja höyläten," "Paratiisi," "Bensaa suonissa," "Ikkunaprinsessa," "Tähdet, tähdet," and "Laivat."

Somerjoki began his musical journey in 1963 when he joined the band "The Five Yes," initially playing the drums before taking on the role of lead singer. His recording debut came in 1966 with M.A. Numminen's "Taisteluni," where he performed the track "Laki epäsiveellisten julkaisujen levittämisen ehkäisemisestä."

In 1969, he co-founded the band and performance group Suomen Talvisota 1939-1940, which disbanded in 1970, allowing Somerjoki to focus on his solo career. His first single, "Mun sormuksein," was released in 1970, though it did not achieve commercial success, it received considerable radio play. The following year saw the release of his debut album, "Synnyin rokkaamaan." In 1973, the song "Ja rokki soi," written by Matti Ja Teppo, marked a turning point in his career, leading to a reissue of his first album, which then enjoyed greater sales. April of that year also brought the single "Fiilaten ja höyläten," a considerable success that remained on the charts until December.

Somerjoki's next album, "Näin käy Rock & Roll," was released in 1974 and featured one of his most recognized songs, "Paratiisi," for which he wrote the lyrics and Arja Tiainen composed the music. In 1975, he released a more mellow album titled "Sydän lämpöä täys," which did not perform well commercially, resulting in a hiatus from LP recordings until the early 1980s, though he did release a couple of singles toward the end of the 1970s.

Initially, Somerjoki's backing band was Oy Niittisydän Ab. Later, he collaborated with his brother, Kari Somerjoki. Following the success of "Fiilaten ja höyläten," audiences desired more rock music, leading to the formation of a new band initially named "St. Devils," which quickly changed to "Money," active from 1973 to 1974. This was followed by "Pasi Ja Pekka ja Viikingit" in 1975, though their partnership ended due to Somerjoki's challenging behavior and struggles with alcohol. In 1975-76, he worked with a band featuring some members of "Money," and another group backed him until late 1979, continuing into early 1980.

In 1981, Somerjoki formed a new backing band, Agents, with whom he released "Ikkunaprinsessa" in 1982 and "Tähdet, tähdet" in 1983. To ensure successful performances, the band hired Pekka Tammilehto in 1982. Despite these efforts, Somerjoki's career faced decline, although he released the album "Laivat" in 1985 to positive reception from both audiences and critics. By the end of 1985, his collaboration with Agents came to a close, and he began work on a new album, which remained unfinished. His final backing band was Herranen Aika, who played on the last two Pyramid singles, although only guitarist Tapio Kallio received credit.

Somerjoki's last performance took place on December 28, 1986. He passed away on January 14, 1987, in Helsinki, Finland, due to complications from alcohol poisoning, a heart attack, and pneumonia, at the age of 39.

He was known to use several pseudonyms throughout his career, including V. Esine, G.A. Johanssonin Perikunta, Mauri Mannakorpi, and Teppo Räme.