Housed in a dedicated wing of the ACDA national office building in Oklahoma City, the Museum houses various artifacts and installations representative of both ACDA history and the development of the choral art in the United States from the mid-20th Century to the present. A series of large video screens allows for the presentation of concert footage and various supporting videos, including the Wall of Honor.
A recent installation is "Dresses through the Decades", an exhibit on loan from Southeastern Performance Attire (Dothan, Alabama) that features concert wardrobe. c.1980-2013. One of the most popular displays is Eric Whitacre's piano. Donated by by the composer, it is the instrument on which on which he wrote many of his beloved choral works. Other donations have included a 1950s-era Hume & Berg riser compliments of Webster University that stands next to a 21st century TourMaster riser provided by the Wenger Corporation (Owatonna, Minnesota). Wenger has also supplied the Museum with music stands for use both in static displays and in performance.
The McMahon Museum is the site of frequent concerts as a part of the Visiting Choir Series. These events feature informal performances by choirs that are passing through Oklahoma City on a concert tour.
The McMahon International Choral Music Museum is open from 8:00 a.m. to 5:00 p.m. (central time) Monday through Friday. While it is available to visitors at no cost, reservations are recommended. Contact Scott Dorsey (firstname.lastname@example.org) for additional information.