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Artistic Staff  
Marcela Molina, Director 
Chris Fresolone, Assistant Director (Director, Jubilate)
Julia Hollis, Associate Conductor (Ladybugs and Hummingbirds)
Jess Edelbrock, Associate Conductor (Mariposa Singers)
Jennifer Wortman, Associate Conductor (Bumblebees)
Gloria Day, Associate Conductor (Downtown Engagement Choir)
Benjamin Lebovitz, Associate Conductor (Sahuarita Engagement Choir)
Natalie Hall, Bumblebees, Ladybugs, and Hummingbirds Assistant
Hannah Spiller, Bumblebees Assistant
Kuei-FanLin, Accompanist (Bumblebees, Mariposa, and Jubilate)
Woan-Ching Lim, Accompanist (Ladybugs and Hummingbirds)

Administrative Staff
Verneatte Poleyestewa, Administrative Executive
Charlene Deal, Bookkeeper

Artistic Staff 


Marcela Molina, DMA (began as Artistic Director in the fall of 2006)

Born in Bogotá, Colombia Dr. Marcela Molina holds degrees in Choral Conducting and Theory and Composition from the University of Arizona and Westminster Choir College, respectively.

As a member of the Westminster Symphonic Choir (1998-2001), Dr. Molina sang under the batons of Joseph Flummerfelt, Kurt Masur, Wolfgang Sawallisch, Zdenek Macal, and Sir Colin Davis with such esteemed orchestras as the New York Philharmonic, the Philadelphia Orchestra, the New Jersey Symphony and the Orchestra of St. Luke’s. 

In 2002 Dr. Molina joined the theory faculty for the Select Young Artist Certificate Program at the Westminster Conservatory. From 2003-2006, Dr. Molina served as assistant conductor to Dr. Julian Ackerley of the Tucson Arizona Boys Chorus. In the fall of 2005, she contributed four articles to the book Teaching through Performance in Choir, Volume 2.  In addition, in 2005, she was honored to be guest conductor for the professional choir Tucson Chamber Artists's holiday program. She also enjoyed podium time with the Arizona Choir, University Community Chorus, and The Women's Choir of The Vocal Arts Festival among other undergraduate ensembles at the University of Arizona. From 2008-2012 Molina served as the Artistic Director and Conductor of the Tucson Masterworks Chorale.


In 2006, Dr. Molina was appointed Director of the Tucson Girls Chorus, and in 2011 she took the helm as Executive Director. Since then the organization has grown significantly in both program and outreach. In 2012, Dr. Molina was an honoree in Tucson's 40 under 40 for her significant achievements and contributions in her profession and community. In 2014, 

Dr. Molina was one of eight in the state of Arizona chosen as a Cox Hispanic Heritage Month honoree.

Email Dr. Molina

Assistant Director

Chris Fresolone, DMA

Dr. Fresolone directs the Jubilate Choir and is the accompanist and assistant conductor for the Jubilate and Advanced Choirs. He is the director for the TGC satellite program serving downtown Tucson and the South-side of Tucson. He coordinates the theory curriculum for the Tucson Girls Chorus and teaches theory to the Mariposa Singers and Advanced Choir. 

Chris has recently completed his doctoral studies in organ performance with a minor in choral conducting from the University from Arizona. He is also organist at Casas Adobes UCC Church in Tucson and teachers music at The Gregory School.

Before arriving in Tucson in 2006, Chris lived in the Seattle area, where he was a church musician, music educator, and musical theatre director. Chris served as musical director for productions including Bye Bye Birdie, Footloose, Nunsense, and the Taxi Cabaret, which Chris first directed for the Village Theatre's Festival of New Musicals in Issaquah, WA.

Chris received a bachelor's degree in music, a bachelor's degree in computer studies, and a master's degree in music technology, from Northwestern University in Evanston, IL.  While a student at Northwestern, Chris worked for Harmonic Vision, where he helped develop and support music educational software from the award winning Music Ace series. Several of Chris's original compositions appear within the software! Chris also served as organ scholar and assistant conductor for the Northwestern University Chapel Choir.

Chris is originally from New Jersey; during his high school years he performed (and was president of) in his high school choir and the Buttondowns, the school's select men's vocal ensemble. He played in the pit bands for the musicals at his school and at local colleges (including Godspell, Into the Woods, and Pippen), and he played the French Horn in the New Jersey Youth Symphony.

Chris fancies himself as a composer and arranger; he will actually call himself a composer once he is published! He has composed or arranged a few works for the Tucson Girls Chorus, and several small works for the organ.

Email Dr. Fresolone

Associate Conductor, Ladybugs and Hummingbirds Director

Julia Hollis

Julia Hollis grew up in Chandler, Arizona. 
Mrs. Hollis moved to Tucson to attend the University of Arizona and graduated with her Bachelor’s degree in Music Education in 2004. While at the U of A, Mrs. Hollis sang with the Symphonic Choir, UA Opera Theater and the women’s a cappella ensemble, Vocal Ease. She was President of Symphonic Choir and the teaching assistant for the UA Outreach Choir.

Mrs. Hollis has been teaching choir, general music, band and guitar at Esperero Canyon Middle School for 8 years. Her choirs have consistently received Superior and Excellent ratings at state choral festivals. During her time at Esperero, the choir program has tripled in size. 

Outside of school, Mrs. Hollis sings professionally with the Tucson Chamber Artists and is the Director of Contemporary Music at Northminster Presbyterian Church. She has also served on the board for the Arizona Choral Educators, previously as the Vice President for Elementary and Junior High Activities and currently as President. Mrs. Hollis is an active member of both the National Association for Music Education (NAfME) and the American Choral Directors Association.

Associate Conductor, Mariposa Singers Director

Jess Edelbrock

Jess Ryan is a pianist, vocalist, and educator based in Tucson, AZ. She received a B.M. in Choral Education from Northern Arizona University in May 2013. She accompanied for the Ladybugs and Hummingbirds before relocating to Phoenix to direct the choral program at Central High School. While in Phoenix, Jess worked with the Phoenix Girls Chorus. She is now excited to be back in Tucson to continue her career and enjoy being married (to another music teacher!). Jess is looking forward to a great year teaching music at Mesa Verde elementary, accompanying, teaching private lessons, and conducting the wonderful ladies of Mariposa.

Associate Conductor, Bumblebees Director

Jennifer Wortman

Wortman is a native Tucsonan.  She went to TUSD K-12 Magnet Schools and was in Tucson Girls Chorus 5yrs, going on the first three tours.  Ms. Wortman received her Bachelor of Music Education degree from Northern Arizona University and is currently finishing her Masters in Choral Conducting from California State University Los Angeles.  She was the choir teacher at Palo Verde High School for twelve years as well as the founder of the Palo Verde Alumni and Faculty Choirs.  Ms. Wortman just finished her 6 yr Presidential term of the Arizona Choir Educators.  She has subbed for Tucson Girls Chorus as well as being involved in TGC Camp for numerous years.  Ms. Wortman is currently the Arts Integration Specialist at Cragin Elementary 
School teaching K-5.  Ms. Wortman has a wonderful husband and two beautiful boys.  

Associate Conductor, Southwest Engagement Choir Director

Jessie Pierpont

Jessica Pierpont has recently been accepted into the master’s program at University of Arizona and currently attending their MM program in choral conducting. Jessica is the music director for St. Mathew’s Episcopal church and she serves as assistant conductor for Tucson Masterworks chorale. Jessica is also the conductor for a satellite choir arranged by the Tucson Girls Chorus. 
She is originally from Connecticut, where she spent nine years as a member of the United Girls’ Choir. She eventually went on to study music at Castleton State College where she obtained her bachelor’s degree in music with a concentration in piano. Jessica has recently finished an internship with the United Girls’ Choir in New Haven, CT where she has served as conductor, teacher and administrator for 40 hours a week since January of 2014. She has also maintained a position as the music director for the Castleton Federated Church, in Castleton, VT since September of 2012. She has been a student conductor for her college choir, Collegiate Chorale from 2012-2014 and was appointed as president of the Castleton State College student chapter of American Choral Directors Association (ACDA). She was most recently appointed president of the University of Arizona graduate student chapter of American Choral Directors Association. She has attended and participated in many workshops such as, Westminster Choir College summer workshops, ACDA regional collegiate workshops, and Beyond the Baton with Diane Wittry.

Bumblebees, Ladybugs, and Hummingbirds Assistant

Natalie Hall

Natalie Hall was a member of the Tucson Girls Chorus for nine years. She is currently pursuing a bachelor’s degree in Choral Music Education with an emphasis on elementary education. She intends to continue graduate work in choral conducting. At the UofA, Natalie sings in Symphonic Choir, the premier undergraduate choral ensemble. She also sings in Canterbury Choir at St. Philips in the Hills Episcopal Church.


Natalie loves working with the Bumblebees, Ladybugs, and Hummingbirds, and feels very fulfilled helping the girls grow musically and extra-musically. She also teaches choir, theory, and handbells for the After School Music Program for children grades 3-5 at St. Philips. She is the director of the church’s Cherub Choir for children ages 4-7. 


When she was a member of the Advanced Choir in TGC, Natalie served as president. She is the President Elect of the National Association of Music Educators collegiate chapter at the UofA School of Music. 


Kuei-Fan Lin, DMA

Dr. Lin is happy to be the accompanist for the Bumblebees, Mariposa Singers, and the Jubilate of the Tucson Girls Chorus. A native of Taiwan, she completed her doctoral studies in composition from the University of Arizona (2014). She also received her Master and Bachelor of Musical Arts in Composition and Theory from National Taipei University of Education (2008, 2006), with minors in piano and vocal performance. 

Dr. Lin is a composer, pianist, and educator. While an undergraduate, she studied for musical education and had numerous opportunities teaching in elementary schools. She enjoyed her time teaching and playing music with children. Before entering the University of Arizona, she had also been an accompanist for the choir in the First Presbyterian Church in Taiwan for several years.

Being a composer, Dr. Lin’s music ranges from acoustic to electronic music. She has received numerous prizes and her pieces have been selected from many computer music conferences and performed in several places, among them: Arizona, New York, Connecticut, Virginia, Wisconsin, Chicago, England, Holland, Slovenia, Greece, Australia, Shanghai, Beijing, and Taiwan.


Woan-Ching Lim

Originally from Malaysia, collaborative pianist Woan Ching Lim collaborates in ballet,
classical vocal, instrumental repertoire and musical theatre. While maintaining an active 
performing schedule, Woan Ching serves as staff accompanist/pianist of University of 
Arizona (UA) School of Dance, UA trumpet studio and Tucson Girls Chorus. Recent 
collaborative performances include Arizona Opera Company, Interlochen Summer Art 
Camp, Tucson Desert Song Festival, Ballet Arizona and Vancouver International Song 
Institute. Woan Ching holds a Master of Music degree in Collaborative Piano from 
University of Arizona under the tutelage of Dr. Paula Fan.