The performers, aged 8–15, are selected from schools in Sofia.
Sofia | The Beach Boys | Beastie Boys | Backstreet Boys | Pet Shop Boys | choir | Choir | The Bowery Boys | Sofia University | BSC Young Boys | Boys & Girls Clubs of America | PFC CSKA Sofia | The Boys | Sofia Coppola | Jersey Boys | Sofia Gubaidulina | Boys' Life | Westminster Choir College | PFC Levski Sofia | Mormon Tabernacle Choir | The Dead Boys | The Choir (alternative rock band) | The Choir | Lost Boys of Sudan | Boys' Brigade | The Lost Boys | the Beach Boys | Sport Boys | Newell's Old Boys | Museo Nacional Centro de Arte Reina Sofía |