Harmony Express is a 4-part a cappella chorus for both women and men based in Germantown, Maryland.

[2] On July 1, 2008, Mike Edison filed the Maryland Articles of Incorporation as president of the newly formed music group.

[3] Harmony Express has performed at the F. Scott Fitzgerald Theatre,[4] Montgomery County Agricultural Fair,[5] Kentlands' Oktoberfest,[6] Glenview Mansion,[7] Celebrate Gaithersburg, Lakeforest Mall, Rio/Washingtonian Center, St. Rose of Lima Fiesta, and Leisure World.

[9] The chorus competes regularly, puts on an annual show,[10] and serenades lovers on Valentine's Day.

The Glen Echoes has performed The Star Spangled Banner eight times at Camden Yards for the Baltimore Orioles, including a July 2007 performance before a crowd of 40,000 people and a nationwide TV audience.