Our guests for Sing2025 will be 5-time BHS International Chorus Champions Ambassadors of Harmony, and 2005 BHS International Quartet Champions Vocal Spectrum.

Ambassadors of Harmony


The Ambassadors of Harmony® (AOH) is the St. Louis area's premier men's a cappella chorus of more than 100 voices known for powerful and musically masterful performances. Its repertoire includes Broadway classics, barbershop, jazz, pop and a wide selection of holiday favorites.

AOH earned its fifth gold medal at  Barbershop Harmony Society's July 2023 international contest in Louisville, Kentucky. AOH has sung for audiences across the United States and has also performed in England, Germany, Ireland, the Netherlands and Sweden.

The chorus represents the St. Charles, Mo., chapter of the Barbershop Harmony Society. It was founded in 1963 in St. Charles as the Daniel Boone Chorus. As the chorus improved and began winning competitions, it rebranded itself in 1991 as the Ambassadors of Harmony. Since then, the chorus has won dozens of competitions hosted by the Barbershop Harmony Society. Today, AOH puts on numerous shows per year including a popular holiday concert that fills Touhill Performing Arts Center in St. Louis each year.

The Ambassadors of Harmony® chorus seeks to change the lives of audiences worldwide through artistic and emotionally-driven a cappella performances. AOH also strives for musical excellence and to promote the barbershop style.

Vocal Spectrum


Vocal Spectrum has been singing together since 2003. The members of the quartet come from various musical backgrounds, from classical vocal training to jammin' in rock-n-roll bands. These 4 young men, who graduated from Lindenwood University in St. Charles, Missouri, all majored in different fields of study. V.S was originally formed as a one-time educational quartet to sing for a local high school and has never stopped singing since!

V.S. has traveled to Germany, Holland, Sweden, Russia, England, Japan, New Zealand and throughout the United States singing for various shows and conventions as well as teaching high school students about barbershop harmony. Vocal Spectrum has had the privilege of singing for both Russian and China National Television. Jim Henry and David Wright assist with coaching and arrangements for the quartet. 

In July of 2004, Vocal Spectrum won the 2004 International Collegiate Quartet Contest held in Louisville, KY. And on July 8th, 2006 won the coveted International Barbershop Quartet Contest – becoming the first quartet in history to win all 3 possible medals (Collegiate Quartet, Men’s Quartet, and Chorus Medal). The quartet was honored to be inducted into the Central States District Hall of Fame and in 2023, Vocal Spectrum was inducted into the Barbershop Harmony Society's Hall of Fame. 

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