Our Staff and Conductors


Executive Director

Shelby Mattingly


Shelby Mattingly has over sixteen years of financial, management, and event planning experience, in both the for-profit and nonprofit sectors. She holds a Bachelor of Fine Arts in theatre performance from Denison University and a Master in Public Administration with a concentration in nonprofit management from The University of Colorado Denver. She is a committed volunteer, dedicating hours to many organizations including Girls on the Run of the Rockies, Big Brothers Big Sisters, Ronald McDonald House and Casa de Paz. Shelby has been with Inside the Orchestra since 2012, and has been thrilled to commit her professional career to centering children in the world of the arts.


Program Director

Sara Hare


Sara Hare is a classically trained oboist and arts management professional with over 7 years of experience bringing music and educational opportunities to children around the world. She has a Bachelor of Music from the Cleveland Institute of Music and a Master of Liberal Studies in Arts and Culture with a concentration in Arts Development and Program Management from the University of Denver. As a life-long musician, Sara believes deeply in the transformative power of music and is thrilled to have the opportunity at Inside the Orchestra to create musical experiences that educate and delight children all around Denver.

Administrative Coordinator

Lorena Mendez


Lorena Mendez has over 10 years of Office Administration. She approaches all aspects of any job with a positive, hard-working mindset, and is passionate about helping find solutions to any challenges. She has an Associate Degree in General Studies.

Music has been a very important factor in her family gatherings as a child and is excited to bring music to young kids with Inside the Orchestra.

Program Coordinator

Sarah Jylkka


Sarah Jylkka is a Denver-based violinist and violist who has performed and taught extensively all around Colorado. Sarah holds a Bachelor’s Degree in Music Education from DePauw University and an active Colorado Teacher’s License with endorsements in band, choir, and orchestra. Sarah has directed orchestras and worked in public schools for the last 6 years, highlights being Mapleton Public Schools and El Sistema Colorado. Sarah is deeply committed to high quality educational programs for all students and is so grateful to be part of the extremely passionate team at Inside the Orchestra.


Steven Aguiló-Arbues

Argentinian-American Steven Aguiló-Arbues enjoys his roles as a conductor, vocal coach, répétiteur, and recitalist. Outside of his work with Inside the Orchestra, he conducts the Boulder-based choir The Renaissance Project (specializing in Renaissance a cappella choral music). His love for opera has led him to work with companies like Central City Opera, Sarasota Opera, Opera Colorado, The Atlanta Opera, Crested Butte Music Festival, and the Miami Music Festival. He has also served on the faculties of the Manhattan School of Music, Centro Studi Lirica in Italy, Metropolitan State University of Denver, and Colorado State University in Fort Collins. He holds a Bachelor of Music degree from the University of Colorado (Boulder) and a Master of Music degree as well as Professional Studies Certificate from the Manhattan School of Music. Mr. Aguiló-Arbues is also fluent in Spanish and English, helping him to communicate with countless students while educating them in music.

Dan Leavitt

Dan has a Master of Arts in Music from the University of Denver. He has written over 500 arrangements that are played all over the world. Dan has taught music at the University of Colorado Boulder, Metropolitan State University, Colorado Christian University and Cherry Creek High School. He is currently the conductor of the Mercury Ensemble. He has also conducted the Colorado Ballet and the Denver Municipal Band. Dan has performed with numerous recording artists including Andrea Bocelli, Diane Reeves, Mel Tormé, Melissa Manchester, Barry Manilow, Natalie Cole, Bernadette Peters, Ray Charles, Johnny Mathis, Lyle Lovett, Neil Sedaka, Dionne Warwick, Michael W. Smith, Leslie Uggams, Amy Grant, John Denver, Bob Hope, Charlie Pride, Chuck Berry, Charlie Daniels, Kenny Rogers, The Canadian Brass, The Irish Tenors, The Moody Blues, Mannheim Steam Roller, The O’Jays, Kool and the Gang, Dave Brubeck, Phil Woods, Aaron Copland, Richard Stolzman, Andre Watts, and many more. He has performed four times for Presidents of the United States. He can be seen in the recently released PBS special 3 Mo’ Divas. He has recorded with the Colorado Symphony, The Boulder Brass, Rare Silk, and can be heard on Fanfare for the Uncommon Woman by Joan Tower. He has performed with the The Denver Brass, Denver Chamber Orchestra, Colorado Chamber Players, Forever in Blue Jeans, Central City Opera, The Colorado Symphony, Mercury Ensemble and many touring Broadway shows such as Phantom of the Opera, Annie, The Producers, Thoroughly Modern Millie, Annie Get Your Gun, Big, Peter Pan, and others. Dan has taught at the Grenoble Jazz Summer camp in Grenoble France. Dan is very excited to be conducting Tiny Tots. He has a passion for conducting, performing, composing, and music education. “The role of an orchestra in the 21st century isn’t just playing, it’s about developing future audiences and performers.” – Leonard Slatkin

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