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The Treble Training Choir (TCC) welcomes boys with unchanged voices, ages 8 and up. For many boys who audition, this training choir is their first experience with choral singing. They have fun working together as they gain experience singing and performing, while learning proper vocal technique, posture, breathing, tone production, how to read music and basic music theory. They also study recorders and drumming.

Experienced male singers with unchanged voices, ranging from 10 to 15 years old, become members of the Treble Concert Choir (TCC). Their program consists of rehearsals and performances of the traditional boychoir repertoire and Grade 1 Theory & Rudiments. This choir performs in the regular Amabile concert series and tours locally, nationally and internationally. As well as singing on world stages, they have been guest performers with Orchestra London, the Windsor Symphony and the Kitchener-Waterloo Symphony.

The Young Men's Choir (YM) made up of young men with changing voices up to the age of 19. This choir focuses on healthy vocal development and provides an introduction to challenging male voice repertoire. Performing locally, nationally and internationally, they have been featured several times on CBC, Radio L'espace, French public television, and Czech Public Radio and were winners of the National CBC Choral Competition for Youth Choirs - Equal Voice Male in 2004 and 2008.

The Amabile Young Men's Ensemble (AYME) is made up of singers from YM and Primus. Increased international recognition has opened up exciting opportunities for these men to showcase their talents in music festivals and showcases around the world, including recent visits to Prague, Vienna, and California. Highlights of past years include performing with the internationally renowned Tafelmusik Baroque Orchestra, the King Singers, Cantus, Chor Leoni and the Harvard Men's Glee Club. In July 2008, these men played took key leadership roles when Amabile co-hosted a total of 600 choristers at the 2nd International Boys and Men's Choral Festival in the Czech Republic in leadership with the renowned Czech Boys Choir, Boni Pueri.