Co-Founder, Stage Management

Evan Feist has beatboxed at Carnegie Hall, learned from Bobby McFerrin, and scouted for America’s Got Talent. He holds two master’s degrees from Teachers College at Columbia University and a MusB from the Purchase College Conservatory of Music. He was the Content Director of the world's first all vocal/a cappella TV channel, FloVoice, and has traveled the world as an audio engineer, creator, and consultant. For over 15 years, Evan has managed the audio production company Stacks of Wax, has run spontaneous songwriting and vocal improvisation courses through the Creative Vocal Lab, and has been creating content and helping others realize their creative dreams. Currently, you can find Evan producing content and digital media strategies for businesses and creatives alike, advising on creative decisions, and teaching from the comfort of his New York City apartment.

Co-Founder, Guest Liaison

Samuel Strum is a Chicago transplant who absolutely adores Broadway and A Cappella. A cappella is only spelled with two "p"s and two "L"s. He is proud to have begun this journey with Evan starting with BGAC's first iteration in 2017. When not producing BGAC, Sam is helping the entertainment industries at large with financial planning, and teaching his toddler Lyla how to beatbox. Thanks to Laken for being the best mom and wife.

Showrunner, Music Supervisor

Charlie Arthurbegan performing at a very young age, participating in as many musical ensembles, theatrical productions, short films, and middle school dance battles as he could seek out. He discovered his love for contemporary vocal music when he joined Forte, the award-winning a cappella group at Centerville High School. In Forte, Charlie received national recognition as a vocal percussionist and he began arranging, recording, producing, and teaching vocal music full-time. Over the last decade, these experiences have taken him across the U.S., Canada, Russia, and the Caribbean, working and performing with vocal artists such as Vocalight, m-pact, Vybration, The Edge Effect, and Peter Hollens. Currently Chicago-based, Charlie is also a member of the band Chasing Saturn and a co-producer of Broadway Goes A Cappella. @charliemarthur

Technical Director, Social Media Lead

David Fowler is an A Cappella producer, performer, and entrepreneur who’s been working exclusively within the acaverse since 2014. He started out making multitrack Bieber covers in his bedroom at 16 years old, and has since earned millions of views, produced dozens of albums while collaborating with the likes of Peter Hollens and Home Free, and works with his group Verdant to popularize vocal music in the Pacific Northwest.

Finance and Marketing Strategy

Andrew Siribansop is an a cappella producer, recording engineer, and arranger from New York City. He received his Bachelor of Music in Music Composition from Northwestern University, his Master of Music in Film Scoring from NYU, and recently, MBA from NYU Stern. At Northwestern, Andrew was a founding member and music director of his collegiate a cappella group, Extreme Measures. He also founded, music directed, and arranged for the professional a cappella group, Backtrack. With Backtrack, Andrew had the opportunity to perform at Carnegie Hall, the Beacon Theatre, the UN, during the Broadway show Kinky Boots, and on the Steve Harvey Show. Currently, Andrew sings and arranges for Iris, the winners of the 2018 Aca Open.

www.andrewjohnkim.com

@andrewjohnkim

Social Media Team

Social Media Team

Music Director

Harrison Acosta is a Puerto Rican, Brooklyn-based composer, music director, and performer whose work spans the stage, screen, and studio. After completing his undergrad capstone thesis in 2016, "Capturing Moments in Music feat. the Human Voice," he attended the Contemporary Writing and Production program at Berklee College of Music. 

A four-time Contemporary A Cappella Recording Award recipient and winner of ten outstanding arrangement awards, Harrison’s work as an arranger has been recognized nationally. Currently, Harrison leads the Atlas Collective; a team of musicians collaboratively working to champion individual artistry and support the social impact of music. Their latest musical project, Adrift: A Space Musical, is set to debut later this year in NYC.

Recent show credits include music direction and orchestration for “Once Upon A Carnival” (Moonbox Productions), track production for “Dungeons and Drag Queens” (House of Wayward Queers), track production for the “Alicia Keys Tribute” (MGM Music Hall), and a composer role with a new musical in development, “Polyphony.”

Stage Management

Rachel has been a part of Broadway Goes A Cappella since its start back in 2016! She’s been a part of many, many BGAC shows since then. Always eager to help, Rachel stepped into the producer room in 2025. Outside of a cappella, Rachel is a private music teacher, and a solo performer who goes by the name of KarmaRé. If you visit RachelKarmelMusic.com , you will see that she is passionate about teaching and providing a personal musical experience to everyone she teaches. In 2017, KarmaRé began performing original music, and in 2019 she was signed to Unispan Records. KarmaRé has 2 EP’s out and available for streaming; Not Fazed and Mood Ring. KarmaRé also performs The Great American Songbook with a jazz combo on occasion! To know more about her and her musical adventures, follow @karmaremusic on IG or TikTok or visit Karmaremusic.com

EDI/IDEAA Director