Part of the Escola Coral of the Orfeó Català, it is made up of 40 boys and girls aged from eight to ten. Glòria Fernàndez is its conductor and Laia Armengol is the pianist. During their time in this choir the singers begin to work regularly on the rich repertoire for children's choirs and build up their commitment to the choir by attending two weekly rehearsal sessions. The singers are introduced to vocal technique by training their voice, as well as teaching the body posture and awareness of breathing needed to sing. They combine rehearsals with two sessions a week on musical language to learn the basics of reading and writing music.

They appear regularly in concerts at the Palau de la Música Catalana alongside the other choirs of the Escola Coral, and also pursue their own activities within the Palau and outside, taking part in exchanges with other Catalan choirs. Of the last 2023-24 season, the Cuques de llum concert stands out, with works by Marc Dalmases, together with the Cor Petits de l'Orfeó Català and the Cor de l'SCIC.

For this 2024-25 season, the Cor Mitjans together with the Cor Petits of the Orfeó Català will present in May 2025 the cantata De qui és el bosc, with music by Josep Ollé and libretto by Marc Donat.

The Escola Coral of the Orfeó Català is sponsored by Fundación Banco Santander