Secret Oyster was a seminal Danish progressive rock band that emerged in the early 1970s, renowned for their skillful blend of jazz fusion and progressive rock elements. Born out of the ashes of the late-'60s group Burnin Red Ivanhoe, Secret Oyster was crafted by former members Karsten Vogel (saxophones, keyboards) and Klaus Bøhling (drums), along with bassist Jess Stæhr, guitarist Claus Bøhling, and keyboardist Kenneth Knudsen. They quickly made a name for themselves in the progressive scene for their virtuosic instrumental prowess and complex compositions.

Their 1973 self-titled debut album "Secret Oyster" set the tone for their avant-garde sound, while subsequent releases like "Sea Son" and "Vidunderlige Kaelling" solidified their standing among prog-rock and jazz fusion aficionados. The band's eclectic mix of improvisational jazz and rock, coupled with shifts in time signatures and tempo, earned them a dedicated following and critical acclaim within the underground music community. The album "Straight to the Krankenhaus", although coming much later, continued to showcase their dynamic experimentation with sound. Their most recent release, "Live In The USA 2007," captured the band's high-energy live performances and further exhibited the enduring vibrancy of their musicianship even decades after their initial emergence on the music scene. Secret Oyster's influence can be traced through the lineage of experimental music, where they remain a cult favorite among connoisseurs of the genre.