1959: The Chicago Young Judea Symphony is founded by Mary K. Rosen. There were 14 students in this first group. After her death, Pamela Overstreet Culley became director and conductor.
1968: Parents of orchestra members form a non-profit organization to provide financial and managerial support for the orchestra. The name is changed to the Metropolitan Youth Symphony Orchestra (MYSO).
1985: Culley retires and Daniel Sommerville becomes director and conductor for MYSO.
1986: James MacDonald becomes MYSO’s director and conductor.
1988: Philip J. Bauman becomes director and conductor.
1991: After a hiatus of two seasons, a process of dissolution is begun. The board, under the leadership of Nancy Denton, decided to relocate MYSO from Chicago to the Joliet area. Auditions are held in May and Lawrence Sisk is hired as director.
1992: Mary Jane Johnson is hired to oversee orchestra business operations.
2001: Johnson retires and Pam Nogal assumes her position.
2008-2009: MYSO performs six concerts during the 2008-2009 season. The last two are May 16 at Joliet Junior College and June 4 at the Billie Limacher Bicentennial Park in Joliet.
2016: Nogal retires and Audra Sybert assumes her position. Nogal becomes board president.
2018: Lawrence Sisk is awarded the Brother Louis Seiler Teaching Award at Lewis University.
2019: MYSO celebrates it's 60th Anniversary with six planned concerts throughout the season including a special March 15, 2020 concert at Joliet Junior College.