Board Members

Julia Hansen PRESIDENT

Julia Hansen


Julia has been a devoted follower of Opera her entire life!  Having little musical talent herself, she has admired and supported the art enthusiastically and is thrilled to be a member of the talented Boulder Opera Company.  Julia is a versatile brand visionary with broad international management experience and multiple language efficacy.  Holding a Master Degree in International Management, Julia brings extensive experience building and leading global companies to the team.  Julia and her family have lived around the world and have enjoyed the cultural diversity of their global citizenship.  Julia is determined to engage the Colorado community in the modern perspective offered by the Boulder Opera Company.  She understands that arts and culture are an integral part of shaping the unique, fast-paced face of the greater Boulder community.   


Olga correll Director of fUNDRAISING  

Olga correll

Director of fUNDRAISING  

Olga is excited to help Boulder Opera in reaching their artistic, educational and financial goals. Growing up in Munich, Germany, she has lived and studied in the UK and Switzerland before moving to the US. She holds a dual Master's degree in Philosophy and Computational Linguistics and is fluent in English, German, and French. Early on she was a very frequent guest at the prestigious Munich Opera House, where student tickets ran half the prize of movie theater tickets. This motivates her to help also make Boulder Opera accessible to everyone. Through her work with Boulder Opera, Olga hopes to not only instill her love of the arts in her four children, but also share with the greater Boulder community.

The Team

  Dianela Acosta  Executive Artistic Director 


Dianela Acosta 

Executive Artistic Director 

Dianela founded the Boulder  Opera Company  in 2012  with the intention  of developing new audiences and making  opera accessible to diverse audiences.Boulder Opera  has introduced thousands of Boulder residents of all ages to opera, bringing together music, dance, and art together with a fresh, vibrant approach to this ancient art.

      Originally from Barcelona, Spain, she is a classically trained singer with a  M.M in Voice performance from Denver University, and sings locally  as an ensemble artist with Central City, Boulder Opera and Opera on tap. Prior to moving to Boulder Dianela lived in NY  where she was an artist in Residence with the Dicapo Opera, Amato Opera, and performed with NY Opera Forum and New York Opera Lyric Theatre.


Ron Ben-Joseph Stage Director & Acting Coach

Ron Ben-Joseph

Stage Director & Acting Coach

Ron works with performers to discover and enhance their natural abilities so that their star quality can shine at auditions and when cast in roles. He has spent close to 20 years coaching actors and singers on audition techniques for Opera, Film/TV, Musical Theatre, as well as Public Speaking. Getting quick organic results that leave the client feeling empowered and excited is the cornerstone of his work as as a coach. Some of the performers Ron has worked with have gone on to book roles on Broadway, national touring companies, regional theatres, and in Hollywood. His students have also won major awards at international acting and singing competitions.

Ron has a B.A. in Theatre and Psychology from National Louis University, and an M.A. in Communication, Media, and Theatre from Northeastern Il University. A recent transplant from Chicago Ron, his wife Kerry, and daughter Ellie are proud to now call Colorado home!

Chappell Kingsland CONDUCTOR & COMPOSER

Chappell Kingsland


The music of Chappell Kingsland seeks to integrate elements from diverse musical cultures into a personal and compelling synthesis. He studied composition at the Eastman School of Music (BM) and Indiana University’s Jacobs School of Music (MM, DM). His compositions have won first-place awards from the Percussive Arts Society, the Jacobs School of Music, and the International Tuba-Euphonium Association, among others. He teaches Music Theory and Piano Class at the University of Denver’s Lamont School of Music and plays for Eurhythmy classes at the Denver Waldorf School.

Dr. Kingsland was the founder and Artistic Director of New Voices Opera, a student-run opera company in Bloomington, Indiana. His first full-length opera, Intoxication: America’s Love Affair with Oil, premiered in April of 2013 and will receive a new production in Louisville, Kentucky this summer. Reimagining Opera for Kids commissioned The Firebringers, a half-hour chamber opera which was performed at twenty schools in the 2014-15 season and will be performed by the Boulder Opera next year. He is the faculty advisor for Mile High Opera in Denver.

Dr. Kingsland’s piano and organ recitals are noted for the diversity of their programming; in 2014 he toured with a program entitled Impressionism and Rock Piano. This summer he will collaborate with some amazing musicians to begin recording his unique arrangements of rock songs.  Please visit his website for details:

Jewels Rossallini -Coker DirEctor of Development 

Jewels Rossallini -Coker

DirEctor of Development 


Jewels is thrilled to put her talents and love of the arts to use for the Boulder Opera Company. Her first introduction to Opera was at the Lyric Opera House in Chicago where she saw Puccini’s La Boheme.  What made this interesting is that she went with a friend at the young age of 13 who couldn’t afford to buy tickets.  So, she would work the coat check and in exchange get a free ticket anywhere in the house. This model began Jewel’s journey and education into the world of Opera. When Jewels discovered the Boulder Opera Company, she knew right away she wanted to get involved in helping find sponsors so that children and adults could fall in love with outstanding opera.  Jewels has a degree in Art History and Theology that she puts good use to in the world of Software. She has traveled the world Kitesurfing with her husband and has done a northern ascent thru Tibet of Mt. Everest with Peter Hilary for the 50th anniversary of Sir Edmund Hillary’s first ascent .  She has traveled and sailed the world.  A lunch with her will definitely leave you wanting to sponsor the Boulder Opera. 


Melissa Kilberg


Melissa Kilberg is an avid opera fan and supporter of the arts.  With a Master's Degree in Venetian Renaissance art from the Courtauld Institute, and a background in Art History, Melissa has always been enthusiastic about art and music.  She worked at the Santa Fe Opera for half a decade, and fully enjoyed every aspect of the operatic experience.  Now that she has children of her own, it is her passion to promote opera to young audiences and ensure that opera is loved for generations to come.


Robert Arentz


Robert came to Boulder Opera with 33 years of experience in the nonprofit sector. He has organized and conducted a series of three-each community-wide sing-alongs of G. F. Handel’s oratorio: Messiah, on a weekend close to, but before, Christmas. Over the decades, this totals to 99 performances. Mr. Arentz makes his living as aerospace engineer, not as a musician. His other interests including glass-blowing, small-scale stone sculpting, abstract painting, and a little woodworking.  He has a limited, but nice library centered on history and the sciences.  Presently, he is attempting to learn modern Greek:  maybe he’s beginning to lose his mind a little …. 

Sara Parkinson Music director & pianist

Sara Parkinson

Music director & pianist

Dr. Sara Parkinson enjoys a varied career as pianist, vocal coach and conductor.

She has served on the staff and faculties at CU-Boulder, Cornell College, Rocky Ridge Music Center and Metropolitan State University of Denver. Rehearsal pianist credits include La Bohème, West Side Story, Candide, Albert Herring, Orlando, The Elixir of Love, and Ainadamar. She has performed with the Colorado Music Festival Orchestra, Phoenix Symphony Chorus, Boulder Chamber Orchestra, Boulder Bach Festival, Cheyenne Symphony and Colorado Ballet Orchestra.  Music Director credits include Menotti’s The Telephone and The Old Maid and the Thief at Emerald City Opera, The Elixir of Love with Boulder Opera, the premiere performance of Leanna Kirchoff’s chamber opera, and The Clever Artifice of Harriet and Margaret at CU-Boulder in 2013.  Sara has been a member of Central City Opera Ensemble since 2012 and performs Opera Colorado Outreach Concerts. She has worked with Anna Christy, Michael Mayes, Megan Marino, Kelly O’Connor and Jessica Rivera. Dr. Parkinson is currently the Music Director at St. Aidan’s Episcopal Church in Boulder, Director of Operations at Denver Eclectic Concerts and founding member of the tango/classical chamber music group Grande Orquesta Navarre, named Denver’s best chamber orchestra by Westword in 2016. 

Dr. Sara Parkinson holds degrees from the University of Iowa (BM-Piano), the New England Conservatory of Music (MM-Piano) and CU Boulder (DMA-Collaborative Piano) where she held a full assistantship in the opera and instrumental departments. She spent two years traveling, teaching piano and serving as music director at a private boarding school in Switzerland. Festival appearances include Aspen, Musicorda Chamber Music, and Music Academy of the West. Principal teachers include Victor Rosenbaum, Nicolas Carthy and Anne Epperson. 

brooke Murray Assistant Executive Director & Box Office Manager 

brooke Murray

Assistant Executive Director & Box Office Manager 

Brooke graduated from the University of Colorado Boulder with a Bachelors of Arts degree in music, specializing in vocal performance, a minor in business analytics and a certificate in music entrepreneurship. Brooke has studied voice for over eight years and has trained for a summer in Florence, Italy. She is excited to work with the Boulder Opera Company and share her love and passion for music while promoting opera to young audiences. Having grown up in a musical family, Brooke truly believes in the power of music and the arts.

Margaret Siegrist Marketing & eDUCATION MANAGER

Margaret Siegrist


Margaret Siegrist is a mezzo-soprano, arts promoter and community engagement professional passionate about sharing experiences in opera with new audiences.

Margaret works with a variety of opera companies creating strategic communication campaigns as well as planning and performing in education and community engagement events. Siegrist also enjoys a busy performance calendar in the Denver area, singing regularly in Central City Opera’s education ensemble, as a chorister with Opera Colorado and with Opera on Tap. Some other favorite roles include Dinah in Bernstein’s Trouble in Tahiti and Cherubino in Mozart’s Le nozze di Figaro.

Siegrist earned degrees in Voice Performance from University of Northern Colorado (M. M.), marketing (B.A.) and music (B.A.) from College of Saint Benedict.


Audience Development Specialists

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Do you want to build your audiences? Are you looking for audience building tips, techniques and ideas? Audience Development Specialists offers a variety of audience development consultant services to educate and help artists and cultural arts organizations develop a quality audience.

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