Zack Devine - Tenor 1, is a guitarist, vocalist, composer, and educator from Philadelphia, PA. He is very active both as a performing artist and as a teacher. He regularly plays Philadelphia and surrounding areas as both a bandleader and a sideman. Devine also has extensive teaching experience, from private tutoring to responsibilities at the collegiate level as a professor at Drexel University. He is stylistically multi-faceted, able to play anything from jazz to americana to rock, and beyond. He is also a multi-instrumentalist, able to play and teach a plethora of different instruments, ranging from strings to woodwinds and percussion, and his primary focus is rooted in his extensive music theory background.

Zack Devine graduated from University of the Arts in 2020 with a Master’s Degree in Jazz Studies, winning the President’s Award for Excellence in Creative Practice for his conceptual programmatic graduate recital. He collaborated with some of Philadelphia’s best musicians, forming a septet to bring the music to life in what would eventually become his 2021 studio album release entitled Secret Garden. Devine also showed his ability as a skilled audio engineer by recording, mixing, mastering, and producing the entire album on his own. He graduated in 2019 with a Bachelor’s Degree in Guitar from Berklee College of Music.

Zack Devine has spent years building a reputation for being a talented guitarist, powerful vocalist, and innovative composer. He has played music on prominent stages in and around the Philadelphia area, to include the Newtown Theater, Bucks County Playhouse, The City Winery of Philadelphia, and more. He has thrice played the prestigious Diner En Blanc event in Philadelphia. He is a member of the Berklee College of Music Mentor Collective, the Jazz Education Network, and has contributed to the Jazz Guitar Today publication.

Joshua Myers – Tenor 1, is a graduate of Muhlenberg College and will receive his Master’s in Music in Voice Performance from Temple University in 2025. Located in Newtown Square, PA, Joshua has spent his life (so far) making music throughout Southeast PA, having performed with organizations such as the Bach Choir of Bethlehem, Interrupted Silence Vocal Ensemble, and the Allentown Symphony Orchestra. Previous teachers include John Stuart Kennedy, Christopher Hodson, and, currently, Dr. Lawrence Indik. Joshua has a passion for all things vocal music, be it 19th-century opera, 16th-century madrigals, or contemporary chamber pieces. Outside of singing, Joshua’s hobbies include music composition, coffee-making, and cooking. Joshua is honored to be joining Cordus Mundi as his journey of musicianship is also just beginning; with a long road ahead, he couldn’t ask for better company.

Jack Sariego, MD - Tenor 2, is currently a Medical Director for United Healthcare but was previously Vice President for Perioperative Services within the University of Pennsylvania Health System in Philadelphia, PA.  A Board-certified General Surgeon with additional formal training in Surgical Oncology and extensive experience in Trauma Surgery, Dr. Sariego is a Philadelphia native and obtained his undergraduate B.A. degree from the University of Pennsylvania and his M.D. degree from Thomas Jefferson Medical College.  He completed his Surgery residency at The Medical College of Pennsylvania and went on to a successful clinical and academic surgical career in Philadelphia and Mississippi.

Jack was also an active member of the United States Air Force Reserve and rose to the permanent rank of Colonel.  He has held a number of military jobs: General Surgeon, Flight Surgeon, and Trauma/Critical Care Specialist.  In this latter capacity, he deployed to Southwest Asia and Europe during both OPERATION ENDURING FREEDOM and again during OPERATION IRAQI FREEDOM. A decorated veteran, Col Sariego’s last tour of duty was as Commander of the 514th Aeromedical Staging Squadron at McGuire Air Force Base in New Jersey.  He exercised command and control of a medical unit comprised of over 100 members, including doctors, nurses, and critical care assets.

Jack began his musical career with the Thomas Jefferson University Choir while in medical school, where he was featured tenor soloist for many years. He has gone on to perform widely in the classical, operatic, choral, and musical theater realms. He is currently a member of both Cantus Novus and the Bucks County Choral Society, both performing widely in the Doylestown/Solebury area, and is delighted to be the newest member of Cordus Mundi as well. He lives in Doylestown with his wife, Lauren, and in close proximity to his grown twins, Andy and Jessica.

James Wells - Bass 1, joins Cordus Mundi with experience as both a musician and board member of organizations supporting music.  He is a pianist, percussionist and vocalist.  As a health care executive—and now into retirement--James maintained active roles with many musical organizations over decades, including the Boards of the Atlanta Symphony, Orlando Philharmonic, Concordia Chamber Players and Columbus Gay Men’s Chorus.  He was an accomplished jazz and backup musician in Southern California and led his own group Graduate Vibes.  He attended Westminster Choir College, associated with his degrees from Princeton Theological Seminary.  Lionel Hampton tutored him through a program established by the National Endowment for the Arts.    He has performed piano concerts with lectures featuring the works of Dave Brubeck and Scott Joplin.  Currently, James sings with the Trinity Solebury Choir, the New Hope-Lambertville-Solebury Community Chorus and studies piano with John Schucker.  He is a former Warden at Trinity Solebury church and a supporter of Trinity’s Friends of Music.

Jason Gersh - Bass 2, joined the bass section of Cordus Mundi in the fall of 2009. He has been active as a choral singer from childhood onward. He has a BA in Music from Haverford College and a Ph.D. in Musicology from the University of North Carolina at Chapel Hill, where he wrote a dissertation on the motets of William Byrd. Having switched over to the "dark side" of university administration, Jason works as Executive Director of Finance and Administration for the Drexel University Office of the Provost, where he manages faculty appointments, budgetary reports, policy review, and other such matters. In his free time, he moonlights as an amateur genealogist and dabbles occasionally in composition.  

Originally hailing from the great state of Delaware, Jason resides with his wife Katie and daughters Lucy and Molly in Newtown, PA.

Dennis Walsh – Bass 2,  is one of Cordus Mundi’s founding members. He lives in Buckingham with his wife of 57 years, Suzanne; he has 5 children and 4 grandchildren. He is retired  from Prudential Healthcare as Senior Vice President, Eastern Health Plans.

He helped to establish Cordus Mundi as a nonprofit corporation in 2009 and served as Board president until June, 2023.

He sang with Bucks County Choral Society for 23 years and is a former Chairman of the Board of that organization.

He sings in the senior choir at Trinity Episcopal Church Solebury.

Rick Rosen - Conductor/Bass, is the Founder/Artistic Director of Cordus Mundi, as well as the Founder/Artistic Director of the New Hope-Solebury & Lambertville Community Choir. Rick also produces the Mr. Rick Presents local concert series, and teaches songwriting, guitar & music history classes both privately and at multiple Bucks County-area public venues. He is the former Minister of Music at Church of Messiah/Episcopal in Lower Gwynedd, PA.

Prior to his return to his native Pennsylvania, Rick served as the Director of Music at St. Paul's Episcopal Church, Burlingame, CA. His California vocal performance career includes work as the founder of the original six-man west coast-based version of Cordus Mundi, as well as an extended singing stint with the San Francisco Concert Chorale, where he served as men's section leader and president of the executive committee. During his tenure as SFCC president, the group recorded two CDs, and toured Mexico and France. Rick has studied with A. Alan Apple, James Shollenberger, Rene Clausen, Anton Armstrong, Patty Hennings, and Blanche Honegger-Moyse.

Rick also runs Jack Rosen Photos, LLC, a business devoted to his father’s photographic work, and is the owner of the Rick Rosen Marketing Group, a full service marketing and consulting agency, with a wide range of clients in the musical instrument, music performance and production, computer, and related industries.

Roburt Gajdos  - M.A. (composition),College of New Jersey; B.A. (piano), University of the Arts

Roburt studied with Susan Starr, Joseph Schwartz, Mathilde McKinney, Edward Hatrak and Dr. Eugene Copeland. He also studied piano with Olga d’Stroumillo, an associate of Vladimir Horowitz, with an emphasis on the study of tone production.

His concert career has included performances for Delaware Valley College, New Jersey State Museum Concert Series, Trenton Cultural Center, Heritage Towers, Bucks County Community College, and Trenton Symphony. Roburt has also performed works for Oboe/English Horn and piano by composers Andrea Clearfield and Derek Bell with Philadelphia oboe virtuoso, Rheta Smith. He has accompanied violin virtuoso Alexander Djokic as part of Duo Esterhazy. The duo has performed in New York, Philadelphia, Chicago, Baltimore, New Hope, and Lambertville.

Roburt is the accompanist for New Hope-Solebury & Lambertville Community Choir and the Abington Choral Club, in addition to Cordus Mundi. He is the pianist for St. Philip’s Episcopal Church in New Hope. He taught piano and was the accompanist for the Hellyer Performing Arts Center for many years. Roburt has always shown an affinity for the Romantic and Impressionist repertoire.

Tony Fazey - Tenor 2,  relocated to the Philadelphia area from the U.K. in 1982 for work-related reasons. Prior to crossing the pond, he sang first tenor in musicals produced by the Falkirk Bohemians, a theatre group based in Falkirk, Scotland. He also had a brief stint with a Gilbert and Sullivan group there, soloing in The Gondoliers.

After arriving in the New World, Tony continued to sing, joining the Trenton Civic Opera chorus in 1990. Travel commitments forced him to give up singing in 1995, but couldn't silence him for long. In 2005 he joined the Bucks County Choral Society where he sang first tenor. At the same time, he became aware of a new a cappella group (Cordus Mundi) being formed in the New Hope area where he lived. He attended one of their first rehearsals and was promptly added to the group as a first tenor. Tony's tenor voice is featured in a variety of Cordus Mundi performances, and he remained with the group until illness unfortunately forced his retirement.

Cordus Mundi loves & sorely misses our brother in song, and, yes, we understand that the U.K. is still seeking reparations from the United States for stealing one of their first tenors.

Cordus Mundi notes with sorrow and sincere respect the passing of our friend and benefactor Kenneth Andersen. With the support of Mr. Andersen and his family, Cordus Mundi was able to establish and operate the Cordus Mundi Commission Fund, a lasting tribute to the Andersen family. The Andersens’ support was also instrumental in the recording of our second CD, Unforgettable, released during the 2019-2020 season.

Thank you, dear sir - you’ve helped us to grow and we are eternally grateful.