Mrs. McNiff has led choirs and instructed courses at the University of Arizona and Arizona State University. She has also guest lectured at San Diego State University and Oklahoma State College. 

Mrs. McNiff has conducted fully orchestrated works by various composers including Bach, Handel, Mozart and Faure. She has conducted chamber works and 21st century opera by Eva Kendrick and Ronnie Reslef and has composed several treble works for her own choral ensembles. 

She has directed the Arizona State University Gospel Choir, University of Arizona Opera Chorus, Recital Choir, Honor Choir, Kantorei Singers and University Singers. She has also led the Leman Academy Honors Choirs, Audivi Vocem Conductors Choir Summer Festival ensembles, Tucson Masterworks Chorale, Bisbee Community Chorus, Christ Presbyterian of Tucson Choirs, Mountain Vista Unitarian Universalist Choirs, Church of the Painted Hills of Tucson United Church of Christ Choirs,  and Christ the King Catholic Church of Tucson. 

To meet the need of undergraduate students, Mrs. McNiff designed and founded the Audivi Vocem Conductors Choir Summer Festival in 2015. The program includes ensembles in Tempe serving Arizona State Universty and Northern Arizona University, and in Tucson serving the University of Arizona. She oversaw masterclasses with young conductors, acted as primary organizer, recruited multiple choral and orchestral ensembles. She created and directed a renowned program which attracted guest clinicians such as Grammy Award Winning Dr. Jerry Blackstone (University of Michigan), Grammy Award Nominated Dr. James Jordan (Westminster Choir College), Grammy Award Winning Dr. Jason Harris (Xavier University), and Dr. Arian Khaefi (San Diego State University).

Mrs. McNiff, conducting an English Madrigal

University of Arizona, 2015

Providing a Guest Lecture to undergraduate Music Education Majors

San Diego State University, 2021

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