Meet Our Singers

Michelle D’Arcy




Michelle D’Arcy comes from a family of singers and instrumentalists.  She sang and played ukelele starting from age 7.  Michelle competed as a French horn soloist, as well as a singer in the choir at the prestigious New York State Chautauqua Institution during most of her school years.  Michelle switched gears at the end of her high school years and joined a few Rock & Roll bands singing, harmonizing and playing guitar.  She always maintained her classical and jazz musical background, singing in many choirs throughout the years.  Michelle was a founding member and singer in the successful female a cappella group, The Rhythm Method, in Colorado.  They stood out in the a cappella community performing all original arrangements as a group.  The Rhythm Method performed locally and toured nationally.  They won the Rocky Mountain Harmony Sweepstake’s award for “Best Original Song.”  Their album, “The Rhythm Method Live” also earned great reviews nationally.  Michelle has received extensive a cappella and improvisational training from some of the best in the industry including Bobby McFerrin, Dr. Ysaye Barnwell and Rhiannon.  Michelle continues to bring her musical experience, wisdom, and an alto-to-tenor range to 5280 A Cappella.  Michelle produced 5280 A Cappella’s self-titled album, “5280 A Cappella” and their second release, “Elevated.”

Michelle is the leader of 5280 A Cappella.

Kim Shepherd




Kim discovered her love for music at an early age and was involved in voice and piano lessons by the age of 8. She became an active choral singer as a young adult and participated in many top-tier choir and small groups throughout her school years. Kim participated in a variety of musical productions including Fiddler on the Roof, Guys and Dolls, Jekyll & Hyde, and performed as Sally in You’re A Good Man Charlie Brown. While attending the University of Colorado at Boulder, Kim continued to pursue her musical talents by performing with the university’s Collegiate Chorale and sang soprano in one of our a cappella community’s favorite collegiate groups called Extreme Measures. You can find Kim securely covering the very top vocal line as our Soprano.  Kim’s gorgeous voice also allows 5280 A Cappella to seize any opportunity we can to have Kim sing solos as well!

Helen Gonzales



Helen began performing a cappella music in high school as part of a group named Raging Harmonies.  Through international competition, the group was featured on the “Best of High School A Cappella” CD.  They also received the honor of being named, “Audience Favorite” at the semi-finals for the National Harmony Sweepstakes.  Helen studied vocal performance at the University of Northern Colorado and spent her summers as a camp counselor at Rocky Mountain Vocal Jazz Camp under musicians such as Peter Eldridge of New York Voices and members of M-Pact.  She currently works as the youth director and assistant worship leader at Agape Life Church.  Adding to the many hats that she wears, Helen is also the Director of Vocal Chords, an a cappella group out of Arvada West High School.  In 5280 A Cappella, you will hear Helen singing the mezzo/alto harmonies as well as some great leads.

Alex Acheson



Alex Acheson, our Vocal Percussionist/Beatboxer, starting playing the tuba when he was in the 6th Grade. Alex now studies music education at the University of Colorado at Boulder. In addition to playing the tuba, Alex has played many different instruments in various ensembles to include: trombone, euphonium, trumpet, and ukulele in jazz bands, symphony orchestras and pit orchestras.  Alex has been the music director for Extreme Measures A Cappella group at CU for two years, where he sings bass and has thrown down on vocal percussions as well.  Beatboxing and vocal percussion has become a passion for Alex.  He is inspired by the Swissbeatbox organization and admires UK Beatbox champion D-Low, 2015 Grand Beatbox Battle Wildcard winner Gene Shinozaki, and Pepouni.  5280 A Cappella welcomes Alex’s talents, incredible stage presence and most of all, his great personality to our group.

Jeremy Mullet




Like most of the singers in this group, Jeremy Mullet began singing at an early age.  He began his musical journey as a member of the choir at his middle school in Longmont, CO.  From there, he continued to sing in high school as a member of his school’s chamber and men’s ensembles.  While attending the University of Colorado at Boulder, Jeremy continued on as a member of the elite a cappella group, Extreme Measures.  It was in this group that he met two longtime friends that would inevitably bring him in as the energetic, humorous and crowd-pleasing baritone of 5280 A Cappella.  Jeremy often hangs out in the lower range of the men’s harmonies, but he can also bust out as a powerful soloist.

Luis SandovalLuis_Profile



Originally from Nogales, AZ, Luis has been passionate about singing since he was four years old.  His first real experiences in music performance came in high school when he was cast as a choir member in Bye Bye Birdie and as the sadistic dentist in Little Shop of Horrors. He was also a member of the University of Arizona Vocal Jazz Ensemble. Luis didn’t dedicate himself to music until he came to pursue a Master’s Degree in Recording Arts at UC Denver.  There, he became a member of the award-winning a cappella ensemble, MIX.  Since graduating, Luis has remained an active member of Denver’s a cappella community. Luis hangs out on the top of the Mens’ section keeping those higher pitches right where they belong.  5280 A Cappella is thrilled to have Luis as our Tenor!

Mark Sobel



Mark originally hails from the suburbs of Philadelphia and has been a passionate singer since the age of 11, at which time he realized he had no talent for the Saxophone and switched over to choir, never to look back.  He began performing a cappella music in college as a member of the University of Rochester all-male group, The Midnight Ramblers.  During Mark’s time with the group, The Ramblers toured internationally, were featured on several nationally-acclaimed compilation albums, and their cover of “Army” was chosen for Ben Folds Presents: University a Cappella!   Since graduating, Mark has continued dedicating himself to music and performing.  He is a proud former member of the San Diego Multicultural Gospel Choir, the non-profit Philadelphia-based a cappella group, Project Philly, and the NYC-based semi-professional a cappella group, Crosstown Vocal.  Now living in Denver, Mark is thrilled to join 5280 a cappella, where he will be singing in the lower ranges, belting out some great solos and occasionally beat-boxing for us.

Bradley Becker




Bradley Becker is a native of Arvada, Colorado. Bradley Becker has played piano since he was five years old. He has been an instrumentalist his whole life. Bradley has had roles as a chorus member, lead actor, and pit orchestra member for a number of various theater productions to include: Thoroughly Modern Millie, Oliver, Footloose, Fiorello,South Pacific. Bradley is currently a student at the University of Denver. He is pursuing a major in Physics, and continues pursuing his musical endeavors at the Lamont School of Music. Bradley performed with an a cappella group on the X-Factor in 2013 at the Denver Coliseum. Bradley is the Music Director for 2 of the Premier Mixed-voice a cappella groups at the University of Denver—Exit 205 and the DU Idiosingcrasies.  For 5280 A Cappella, Bradley throws down creatively covering some additional bass lines, baritone lines and he also jams with our Vocal Percussionist.