Chicago a cappella has become known as one of the area's most accomplished and innovative classical vocal ensembles. Spanning a repertoire from Gregorian chant to the Beatles, the group is particularly known for its performances of new compositions, early music, vocal jazz, and spirituals.  The ensemble has performed over 125 concerts in the Chicago area as well as tour appearances in 11 states and in Mexico since their debut concerts in 1993. A champion of work by living composers, Chicago a cappella has introduced more than sixty works to Chicago audiences, including commissioned works by Chen Yi, Tania León, Ezequiel Viñao, Stacy Garrop and Rollo Dilworth.  In 2007, Founder and Artistic Director Jonathan Miller appointed Patrick Sinozich as the group's first Music Director.  In 2008, Miller was honored with the prestigious Louis Botto Award from Chorus America in recognition of his innovative action and entrepreneurial zeal in developing a professional choral ensemble. The ensemble has released seven CDs, which have received rave reviews nationally. Chicago a cappella performs a series of four concerts each season, with performances in Chicago, Evanston, Naperville, and Oak Park.