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The Siegel-Schwall Blues Band, with Corky Siegel, gained popularity when his band and Seiji Ozawa's Chicago Symphony Orchestra collaborated on William Russo's Three Pieces for Blues Band and Symphony Orchestra in 1968. The next year, he recorded with the New York Philharmonic. These projects led to Siegel's work for Alligator Records, Corky Siegel's Chamber Blues. It has been performed throughout America, at the Aspen Music Festival, Chicago's Orchestra Hall and UCLA's Fine Arts Series.
Mark Paul "Corky" Siegel (born October 24, 1943) is an American musician, singer-songwriter, and composer. He plays harmonica and piano. He plays and writes blues and blues-rock music, and has also worked extensively on combining blues and classical music. He is best known as the co-leader of the Siegel-Schwall Band, and as the leader of the Chamber Blues group.
Musical career 
Corky Siegel's professional music career began in 1964, when he met guitarist Jim Schwall. Both were studying music at Roosevelt University in Chicago. The two became a duo, performing blues music. They landed a regular gig at Pepper's Lounge, where well known, established blues musicians such as Muddy Waters, Howlin' Wolf, and Willie Dixon would often sit in. After a while the duo became a quartet, the Siegel-Schwall Band.
The Siegel-Schwall Band enjoyed increasing popularity, and by 1967 were touring nationally, playing at large rock venues like the Fillmore West and sharing the bill with famous rock bands. Between 1966 and 1974, they released ten albums. After 1974, they stopped playing concerts, but the band re-formed in 1987. They still play occasional live dates and have released two albums of new material.
The idea of combining blues and classical music was first suggested by classical conductor Seiji Ozawa. Ozawa brought together the Siegel-Schwall Band and the Chicago Symphony Orchestra. They first performed "Three Pieces for Blues Band and Symphony Orchestra", by William Russo in 1968. In 1973, the band and Ozawa released a recording of this work performed with the San Francisco Symphony. In 1975, Siegel and Ozawa, with the San Francisco Symphony, first performed another William Russo work, "Street Music: A Blues Concerto". A recording of this piece was released in 1979.
Inspired by his collaboration with Ozawa, Corky Siegel formed Chamber Blues in 1988. The group's music combines elements of classical, blues, and jazz. The band consists of a string quartet — two violins, a viola, and a cello — along with a percussionist, Siegel on harmonica, and sometimes doubling on piano. Chamber Blues is still together. The group has toured nationally and has released three albums.
Siegel has also worked on numerous other musical projects. In 2004, he was a member of a band called the Chicago Blues Reunion, which released the album Buried Alive in the Blues.
With Peter Krammer, Corky Siegel wrote a book for musicians and music students, called Let Your Music Soar: The Emotional Connection. It was published by Nova Vista Publishing in 2007.