Michael Mortilla's music has been played by the finest musicians in some of the best concert halls in the world.

In 2006, The Chicago Symphony Orchestra commissioned Mr. Mortilla to compose two new works. Additionally, Michael was invited to perform with the orchestra as piano soloist in one of his other works. The orchestra performed the world premiere of One Week (2006). Easy Street (1996) was performed with Michael at the piano. The Chicago Civic Orchestra (training arm of the CSO) performed the world premiere of Mr. Mortilla's new work, The Haunted House (2006). All performances were conducted by Maestro Richard Kaufman. Orchestrations were by Mr. Mortilla.

Easy Street was initially composed as an all electronic score for The Chaplin Mutuals. Michael was invited to orchestrate the work for full orchestra. The resulting work premiered at the 1996 Summer Olympics in Atlanta. The world premiere took place July 26, 1996 in Symphony Hall, Atlanta as part of the 1996 Olympic Arts Festival. Richard Kaufman conducted the Brevard Music Center Orchestra with Michael at the Piano. Michael was also soloist in a compiled score to One Week (Buster Keaton). Easy Street has since been performed by several orchestras, including the Harvard Pops Orchestra and the Greensboro Symphony Orchestra (NC).

Other performances of Mr. Mortilla's scores have been heard at Alice Tully Hall (Lincoln Center, NYC), Lincoln Center Out-of-Doors, The Great Lawn (Central Park, NYC), The Kennedy Center for the Performing Arts, and in many theaters internationally.

Michael Mortilla performed as piano soloist with the Chicago Symphony Orchestra