the choir

Katy Avery, Nathaniel Barnett, Jessica Beebe, Kelly Ann Bixby, Elijah Blaisdell, Karen Blanchard, Steven Bradshaw, Colin Dill, Micah Dingler, Robert Eisentrout, Allie Faulkner, Ryan Fleming, Joanna Gates, Dimitri German, Steven Hyder, Michael Jones, Lauren Kelly, Anika Kildegaard, Heidi Kurtz, Maren Montalbano, Rebecca Myers, Kira Neary, Daniel O'Dea, Rebecca Oehlers, James Reese, Kyle Sackett, Daniel Schwartz, Rebecca Siler, Julie Snyder, Tiana Sorenson, Daniel Spratlan, Elisa Sutherland, Daniel Taylor, Jason Weisinger, Shari Alise Wilson


Keyboards — John Grecia
Organist— Scott Dettra
Guest Accompanists— Laura Ward, Mark Livshits, and John Conahan

Conductor— Donald Nally
Assistant Conductor— Kevin Vondrak
Sound Designer— Paul Vazquez


Donald Nally is responsible for imagining, programming, commissioning, and conducting at The Crossing.  He is also the director of choral organizations at Northwestern University where he holds the John W. Beattie Chair of Music. Donald has served as chorus master at the Lyric Opera of Chicago, Welsh National Opera, Opera Philadelphia, and for many seasons at the Spoleto Festival in Italy. He has also served as music director of Cincinnati's Vocal Arts Ensemble, chorus master at The Chicago Bach Project, and guest conductor throughout Europe and the United States, most notably with the Grant Park Symphony Chorus, the Philharmonia Chorus (London), the Santa Fe Desert Chorale, and the Latvian State Choir (Riga).

Donald, with The Crossing, was the American Composers Forum 2017 Champion of New Music; he received the 2017 Michael Korn Founders Award from Chorus America.  He is the only conductor to have two ensembles receive the Margaret Hillis Award for Excellence in Choral Music: in 2002 with the Choral Arts Society of Philadelphia and in 2015 with The Crossing. Collaborations have included the Los Angeles Philharmonic, the Philadelphia Museum of Art, the Metropolitan Museum of Art, the Kennedy Center for the Performing Arts, Lincoln Center, Mostly Mozart, the Cleveland Museum of Art, Carnegie Hall, National Sawdust, the Barnes Foundation, Boston’s Isabella Stewart Gardner Museum, the International Contemporary Ensemble (ICE), the American Composers Orchestra, and The Big Sky Conservatory in Montana where The Crossing holds an annual residency.

In addition to his work with The Crossing, Donald has recently been visiting resident artist at the Park Avenue Armory, music director of David Lang's 1000-voice Mile Long Opera on the High Line in Manhattan, and chorus master for the New York Philharmonic for world premieres of Julia Wolfe and David Lang. He has worked closely with Lang and Allora & Calzadilla on projects in Osaka, London, Edmonton, Cleveland, and Philadelphia.

You can reach Donald at


Jonathan Bradley

Executive Director Jonathan Bradley is responsible for all things organizational and administrative at The Crossing, with a focus on fund-raising and development.  Jonathan served a 10-year long tenure at Carnegie Hall where he built and managed a world-class customer marketing, sales and service program that delivered millions of dollars in revenue and provided key insights into CRM, web design, and marketing initiatives across all customer touchpoints. Most recently, as Chief Marketing and Financial Officer at Primephonic, Jonathan was responsible for launching and developing the marketing strategy, partnerships and US operations for an all-classical HD music streaming service. In this role, he forged value shared partnerships with some of today's foremost new music and classical music ensembles and created an extensive multimedia content marketing program which added value to artist's new releases, back catalog and live appearances. Since 2008 Jonathan has served as President of the Diamond Way Buddhist Center of NYC and Board Member/Executive Officer of Diamond Way Buddhist Centers USA. In these two positions, he helped develop and direct all local programmatic and administrative initiatives, oversaw the operational administration for 30 community centers across the United States, and directed the production of courses and retreats for over 500 people. Jonathan has a BFA from New York University's Tisch School of Arts and an MBA from CUNY Baruch's Zicklin School of Business.

You can reach Jonathan at


Kevin Vondrak

Kevin Vondrak is responsible for production, marketing, and brand at The Crossing, where he is assistant conductor & artistic associate. Notable contributions to Crossing projects include typesetting the Jeff Quartets omnibus edition, and conducting preview excerpts of Julia Wolfe’s Fire in my mouth at The Tenement Museum in New York City. Alongside Donald, Kevin served as assistant music director of the Mile-Long Opera, a work for 1000 voices by David Lang and Diller Scofidio + Renfro, staged on the High Line in New York City. In this role he led rehearsals with 38 choirs as part of an extensive community engagement initiative, collaborated with Target to present a preview at the 2018 TED Conference in Vancouver, BC, and prepared excerpted performances for the Bang on a Can annual gala at the Brooklyn Academy of Music. Also an accomplished pop a cappella musician, Kevin has won awards for his directing, arranging, and recordings with the Washington University Stereotypes and Niles West High School's Echo Effect. He is a staff singer and associate conductor at St. Thomas’ Church, Whitemarsh (Flourtown, PA), conducting scholar with the Reading Choral Society (PA), directs the choir at The Beaumont (Bryn Mawr, PA), and is a member and conductor with the Chestnut Street Singers (Philadelphia, PA). He holds an MM in Choral Conducting from Northwestern University’s Bienen School of Music, and a BA from Washington University in St. Louis.

You can reach Kevin at

 Shannon Mcmahon

Shannon is a 2006 graduate of Drexel University’s Music Industry program where she graduated with a Bachelor of Science Degree in Music Industry / min: Business Administration. Over the last 15 years she has held a variety of positions in Office Management, Bookkeeping, and Non-profit Operations, Development, and Marketing at organizations including Ropeadope Records, Rittenhouse String Quartet and Ensembles, Philomel Baroque Orchestra, Please Touch Museum, and New Horizons Senior Center. In addition, she has consulted for a variety of small businesses and non-profits including Piffaro, the Renaissance Band, The One Eyed Turtle, Germantown Friends School, and Healing with Hearts and Horses Therapy Practice. In her spare time Shannon loves to travel, read, and is an aspiring metalsmith. Her love of travel and culture has also led her to become a Local Coordinator with Academic Year in America, a program of the American Institute of Foreign Study Foundation, where she recruits volunteer host families, supervises teenage exchange students from over 45 different countries, and strives to create a community that breaks down stereotypes and cultural barriers. Shannon lives in the best city in America (Philadelphia) with her husband and her Siamese cat Indiana Jones. 

You can reach Shannon at

john grecia

John Grecia is responsible for holding it all together musically at The Crossing. Our accompanist since 2007, he has an active career as a pianist, organist, conductor and educator. He has served as director of music at St. Mary’s Episcopal Church in Ardmore, PA since January 2000. He also works as a collaborative pianist within the music departments of Saint Joseph’s University, West Chester University, and Overbrook School for the Blind. On the other side of the musical coin, John is a professional pianist, vocalist, songwriter, and frequent performer working in the Philadelphia pop/rock music scene. A debut album of original music entitled Thirteen (John Grecia Band) was released in October 2011. John maintains a busy performing schedule, playing hundreds of shows/performing engagements each year. He holds a B.S. in Music Education and a M.M. in Choral Conducting from West Chester University.

 Paul Vazquez

Paul Vazquez is a recording engineer, mixer and producer based in Madison, NJ, focusing on recording and producing both acoustic and amplified music in a wide array of styles. As with other members of the choir, his work with Donald began long before The Crossing was formed.  It has since developed into a unique collaboration that transitioned from one of mentor to creative partnership. Paul’s work can be heard on WRTI concert broadcasts of The Crossing, as well as many of their notable CD releases including Grammy winners The Fifth Century and Zealot Canticles, and Grammy-nominated Bonhoeffer.

In addition to his work with The Crossing, Paul has provided on site recording and post production for local and national touring acts including Lovely the Band, Matt Mason, CHVRCHES, Ingrid Michaelson, Sarah Barailles, Marian Hill, Mumford and Sons and more. Paul holds a B.S. in Music Education from West Chester University.

scott dettra

Scott Dettra is acclaimed as one of America’s leading organ virtuosos. He combines an active performance schedule with his posts as Director of Music at Church of the Incarnation in Dallas, and as a member of the organ faculty at Southern Methodist University. Before moving to Dallas, Mr. Dettra was Organist of Washington National Cathedral. Mr. Dettra’s playing is known for its poetry, rhythmic intensity, and musical elegance, and has been described by The American Organist as “music making of absolute authority and sophisticated expression.” 

A native of Wilmington, Delaware, Mr. Dettra began piano study at age three and organ study at age eight as a student of his father, Lee Dettra, holding his first church organist position at the age of nine.  Mr. Dettra holds two degrees from Westminster Choir College in Princeton, where he was a student of Joan Lippincott, and has also studied organ and jazz piano at Manhattan School of Music.