Original: One Minute Theory. For The Choral Musc Classroom. Ronald Slabbinck. Voice sheet music. One Minute Theory. Edited by Holly Slabbinck.
Traducció: Teoria Un Minut. Per Coral musc Aula. Partitures de veu. Teoria Un Minut. Editat per Holly Slabbinck. Per a cor. veu.
