Patti Graetz

Interim Artistic Director

With a music career spanning more than 30 years, ProMusica Arizona Interim Artistic Director and Women in Song Conductor, Patti Graetz, is a skilled opera singer, choral conductor, voice and piano teacher, vocal coach for opera and musical theater, worship leader, pianist and organist.  A two-time District winner of the Metropolitan Opera National Council Auditions, she has sung leading roles with major opera companies including Houston Grand Opera, Texas Opera Theater and Arizona Opera and has sung numerous solo recitals, as well as having performed as soprano soloist with symphony orchestras in the US and in Australia.

​As is true with many musicians pursuing professional performing careers, she has had her hand in many different professional musical endeavors over the past 35 years. Currently, in addition to her duties with ProMusica Arizona, she is Director of Creative Ministries at Reunion Church in Peoria, is the music teacher at Ethos Academy in Glendale, teaches private piano and voice, and is the owner/creator of The Music Bus – a music teaching studio on wheels.

Patti lived in Australia from June 2004 to February 2012 where she was a featured soloist with Australian Music Events, sang numerous recitals and concerts, was vocal teacher/coach for the Opera Scholars Australia program, was teaching artist-in-residence for Murray Conservatorium, taught privately, gave master classes in vocal technique for opera and musical theater, conducted the Murray Conservatorium Choir and the M-Con Youth Choir as well as singing on the worship team at her church.

She was head of vocal departments at the Arizona Conservatory for Arts and Academics for its inaugural year in 2003 and at the Arizona School for the Arts from 1998 – 2002.  She was Director of Music at Shepherd of the Valley Lutheran Church in Phoenix from 1995 – 2004. From 1991- 2006, Patti also directed the choir for Temple Beth Israel’s High Holy Days.

​With feet on two continents, Patti continues teaching, performing and conducting.  She returned to Perth, Australia in June of 2018 to sing a lead role in the world premiere of The Folds of Time, a musical-opera by Australian composers Peter Ratnik and Ron Siemiginowski.

Helen Brons


Helen was born and raised in the Netherlands. In 2000, her family moved to a small town in Iowa. In 7th grade, she started to accompany her grade school choir, which sparked her interest in accompanying. In high school, she became the accompanist for the Siouxland Boys Choir, toured with them and recorded 12 CDs. She also served as a local church organist. During high school and college, she was the rehearsal and performance pianist for many musical and opera productions such as Oklahoma!, The Sound of Music, Seven Brides for Seven Brothers and Mozart’s Die Zauberflöte.

Helen moved from Iowa to Arizona and graduated from Northern Arizona University with a Bachelor of Music in Piano Performance with an emphasis on accompanying. She went on to complete her Master of Music degree in Collaborative Piano from Arizona State University. During her years of study, she had the opportunity to participate in many masterclasses, including those led by Jeffrey Swan, Dmitry Rachmanov and Zuill Bailey. Helen has studied privately with Prof. Rita Borden, Dr. Walter Cosand and Prof. Russell Ryan. She is currently a music faculty adjunct at Grand Canyon University and teaches piano at Kat’s Artist Tree.

Yvonne Dolby

Executive Director

Yvonne Dolby is the Executive Director for ProMusica Arizona and oversees the business, marketing and development operations. Prior to joining ProMusica Arizona in 2011, she served on the Anthem Country Club Communication Committee and the Anthem Veterans Memorial Planning Committee. She also worked with a team of communication professionals to create the North Valley Posse communication plan, website and brochure, and she served as website administrator for the Anthem Community Council. Yvonne has numerous articles on a variety of topics published in magazines, newspapers and online, and she has received both a Service Award and Citizen Award from the community for her contributions.

Prior to moving to Arizona in 2004, Yvonne worked for 12 years as General Manager of a privately-held business that sold shipping containers to industrial clients. She holds a BA in Communications from California State University, Fullerton where she graduated with honors.