Fresh off high-profile appearances on GMA Live! and the Interfaith Service at the Cathedral of the Holy Cross before the Obamas, Dorchester and Mattapan youngsters will be among the 350 members of the Boston Children’s Choir (BCC) appearing at their free season finale concert this weekend. This summer some of these talented locals will also travel and sing throughout South East Asia.

Right after the Marathon bombings, ABC invited BCC Artistic Director Anthony Trecek-King to bring his singers to its top-rated morning show. They traveled overnight by bus to sing “Ain’t Gonna Turn Me Round” in Times Square. Host Josh Elliott called the BCC “my favorite choir in America.” Following the group’s cover of U2’s “Pride (In the Name of Love),” Elliott tweeted that the BCC “have given us my favorite musical moment in the two years I’ve been on this show.”

Five-year BCC veteran and Dot resident Khamari Barnes summarized fellow singers’ feelings when he told reporters, “Of course, everyone was excited to do that.”

All 10 BCC sub choirs including the Dorchester House Training Choir and Dorchester House Intermediate Choir will sing a varied program this Sunday at 2 pm before an anticipated jam-packed house at the Strand Theatre. Trecek-King has selected spirituals, folk songs, contemporary works and choral music classics for the sub choirs to perform as individual groups and in various combinations of groups.

This musical world tour will include “Son de Camaguey” from Cuba, “Gerakina” from Greece, “Shannon Castle Reel” from Ireland, “Ramkali” from India as well as several well-known selections from South Africa including “Thula Klizeo” and “Siyahamba.”

The BCC is a multi-racial, multi-ethnic arts education organization that unites area children ages 7-18 across differences of race, religion and economic status. Named Boston’s “Ambassadors of Harmony” by the Boston Globe, the BCC presents 50 performances per season in a wide range of public and private events across the city of Boston and around the world.

Through intensive choral training and prestigious public performance experiences, they learn discipline and develop leadership skills, qualities that stand them in good stead on university applications. 100 percent of BCC alum go on to college, including Harvard, Stanford, New York University and Berklee College of Music.

Singing this Sunday afternoon will be 31 Dot and Mattapan residents: Khamari Barnes, Hanifah Bostic, Shayane Simon-Dalencourt, Teresa Flaherty, Oliva Genus, Abigail Robinson, Jacques Duverna, Kaiya Duverna, Jayda-Marie Powell-Thompson, Cori White, Huyen Nguyen, Makayla Andre, Kanilla Charles, Akeyre McIntosh, Dia Morris, Shantel Teixeira, O.MacKenzi Fernandez, Deyla Lorquet, Isaiah Harris, Cheyenne Petrino, Janae Vellere, Korena Watson, Zayda Adams, Abigail Jenkins, Dexter Jenkins, Dorian Jenkins, Raiana Sumpter, Darrell Long, Elizabeth Thomas, Zahria Huggins, and Ajarae Walcott.

From June 22 to July 6, 2013, 65 members of BCC’s Premier Choir and Young Men’s Ensemble will travel through Vietnam and Cambodia to mark the BCC’s 10th Anniversary and the 50th Anniversary of the Vietnam War. BCC singers will participate in exchanges, workshops and home stays with local students, as well as enjoy sightseeing and visits to historical sites and museums. They will perform seven formal and informal concerts in venues ranging from orphanages to opera houses.

To preview Sunday’s free concert or to sample the CDs and videos of this much-honored musical organization, visit bostonchildrenschorus.org.