Osesp Children's Choir made its debut in November 2000 and gathers together girls from 7 to 14 years old and boys from 7 to 13 years old. Any child can join the choir, as no previous musical knowledge is required. In addition to the opportunity to perform at Sala São Paulo, the children have access to solfeggio and music reading lessons, vocal coaching, and learn about the repertoire as well as prosody and diction. Since 2023, the Osesp Children's Choir conductor has been Erika Muniz, who is also a member of Osesp Choir.