Musicorum was founded in 1995 by Dr. David Taylor, who previously had been a music professor before earning his law degree and practicing law in Mankato. Dr. Taylor also served as Musicorum's first music director, from 1995 to 1999. Musicorum became well known for its December performances of holiday choral music in Mankato's Good Counsel Chapel, with a distinct emphasis on medieval and Renaissance era music. Two of these performances are available on CD or cassette. In March 1999, Musicorum was joined by Lyra Concert, the Twin Cities' original-instruments ensemble, for two choral-orchestral performances that included the area premiere of Gregorio Allegri's famous Renaissance work Miserere Mei, Deus. This performance is also available on CD or cassette.

In 1999, Dr. Taylor moved to Washington D.C. to become an attorney for the Commodities Futures Trading Commission, a federal agency. In the spring of 2000, Dr. Gregory Aune became Musicorum's second music director. Today the ensemble has about 18 singers. Though Musicorum concerts still feature some Renaissance music, the group now performs many outstanding 20th-century choral works. Musicorum holds its winter concerts each December, with spring performances each April or May. Musicorum enters the 2004-2005 season, its tenth, committed to the mission that animated its founding: to bring outstanding performances of high-quality music to Southern Minnesota audiences.

Musicorum Performers 2004-2005 Soprano Anne Dickau Vickie Dunn Amy Korteum Cindy Shirk Alto Sara Buechmann Alice Maung-Mercurio Jenifer Ward Jason Wieland Tenor David Haglin Derek Liebertz Andy Johnson William Meiers Bass Roger Sheffer Darold Rupp Fred Slocum Andrew Thill Craig Shirk	Musicorum Performers 2003-2004 Soprano Anne Dickau Vickie Dunn Cindy Shirk Alto Sara Buechmann Julie Aune Jenifer Ward Kathleen Brice Tenor Jason Wieland Derek Liebertz Roger Sheffer William Meiers Bass Paul Biederman Darold Rupp Fred Slocum Craig Shirk
Musicorum Performers 2002-2003 Soprano Anne Dickau Vickie Dunn Cindy Shirk Alto Julie Aune Alice Maung-Mercurio Kathleen Brice Amy Magnus Jason Wieland Tenor Ryan Magnus Derek Liebertz Andy Johnson William Meiers Bass Roger Sheffer Darold Rupp Fred Slocum Craig Shirk	Musicorum Performers 2001-2002 Soprano Anne Dickau Vickie Dunn Cindy Shirk Alto Amy Korteum Amy Magnus Julie Aune Alice Maung-Mercurio Jason Wieland Kathleen Brice Tenor Ryan Magnus Derek Liebertz Andy Johnson William Meiers Bass Roger Sheffer Darold Rupp Fred Slocum Craig Shirk
Musicorum Performers 2000-2001 Soprano Anne Dickau Vickie Dunn Ann Bennington Alto Amy Korteum Regan Blomme Irene Mulcahy Angela Jansen Tenor Eric Hope Derek Liebertz Andy Johnson William Meiers Bass Roger Sheffer Darold Rupp Fred Slocum Wes Kiplinger
A Choral Christmas 1999 Soprano Ann Bennington Ann Dickau Vickie Dunn Rebecca Manke Alto Amy Kortuem Alice Maung-Mercurio Irene Mulcahey Robyn Menk Tenor Eric Hope Andrew Johnson William Meiers Roger Sheffer * Bass Jason Leimer Darold Rupp Fred Slocum * * - Soloist in Procedenti Puero	A Choral Christmas 1998 Soprano Ann Bennington Ann Dickau Vickie Dunn * Rebecca Manke Alto Amy Kortuem Alice Maung-Mercurio Irene Mulcahey Carol Solyst * Tenor Patrick Fischer Eric Hope Andrew Johnson William Meiers Roger Sheffer * Bass Jason Leimer Darold Rupp Fred Slocum +* Tony Solano +0 Edwin Stock 0 - Soloist in Angelus Ad Virginem + - Solist in Guadete * - Quartet in A Hymn to the Virgin
Haydn, Bach and Easter Soprano Ann Bennington Ann Dickau Vickie Dunn Rebecca Manke Alto Amy Kortuem Alice Maung-Mercurio Irene Mulcahey Carol Solyst Tenor Patrick Fischer Eric Hope Andrew Johnson William Meiers Roger Sheffer Bass Jason Leimer Darold Rupp Fred Slocum Tony Solano Edwin Stock