Leck founded the ARCI São Paulo Children's Honor Choir in Brazil, where he conducts bi-annually.
He has produced four teaching videos entitled The Boy’s Expanding Voice: Take the High Road, Vocal Techniques for the Young Singer, Creating Artistry Through Movement, Dalcroze Eurhythmics and Creating Artistry with the Male Maturing Voice.
Leck is also the editor of two nationally known choral series published by Hal Leonard and Colla Voce, from which many of his own compositions can be purchased.
In 2012, Leck's arrangement of "The National Anthem" was performed by Kelly Clarkson, and Indianapolis Children's Choir, at Super Bowl XLVI.
In this progressive three level workshop, Leck mentors conductors and teachers of all ages, working towards building musicality through expressive conducting gesture.