hexaCollective is an ad hoc vocal ensemble based in the Baltimore/DC area. The current roster includes members of the military, finalists and winners from international competitions and specialists in early and new music who perform regularly as soloists and ensemble singers across the United states and abroad.

Julie Bosworth, soprano
Julie Bosworth, soprano

Praised for her “penetrating lyrical agility, exquisitely phrased” (Jay Harvey Upstage), “notably stylish and expressive” soprano Julie Bosworth interprets a vast array of musical genres. From medieval cantigas to newly composed works, this versatile singer revels in the performance practice of every age. Julie holds a Bachelor’s degree in Music Education from Millikin University and a Master of Music degree in Voice Performance and Early Music from The Peabody Conservatory.

Janna Critz, mezzosoprano
Janna Critz, mezzosoprano

Acclaimed for having "summoned up sonorities that were rich, warm, dark, and comforting" (San Francisco Examiner) and for her "elegance of technique" and "vivid vocalism" (Baltimore Sun), mezzo-soprano Janna Critz is a rising solo artist, early music, and chamber musician. Miss Critz appears regularly with groups like The Thirteen, Mountainside Baroque, New Consort, and The Bach Choir of Bethlehem.

Andrew Hann, tenor
Andrew Hann, tenor

Andrew Hann has demonstrated his versatility by appearing on stage as a vocalist, harpsichordist, and pianist. He holds Masters of Music degrees in both Early Music Voice and Harpsichord Performance at Peabody Institute of Johns Hopkins University. He previously attended Shenandoah Conservatory, where he attained a BM in Voice Performance. Roles include Arnalta in L'incoronazione di Poppea & Orphée in La descente d'Orphée aux enfers. He maintains a private voice and piano studio in Baltimore.

Patrick Kilbride, tenor
Patrick Kilbride, tenor

Patrick Kilbride studied voice & opera at Northwestern University, and the Univesity of Maryland Opera Studio. He was a fellow at the Aspen Music Festival & the Tanglewood Music Center. He has featured in performances with the Boston Early Music Festival, Festival d'Aix-en-Provence, Opéra Royal de Versailles, Aldeburgh Festival, and will return to the Kennedy Center this year with Opera Lafayette in two productions this season in music of Jommelli and Stradella.

Sonya Knussen, alto & artistic dir.
Sonya Knussen, alto & artistic dir.

Praised by The New York Times for her gracefully shaped vocal lines, The Washington Post for her “confident and penetrating account of line” and for her “dead-on surety of pitch and attractive tone” by the Albany Times Union, contralto, Sonya Alexandra Knussen is equally at home performing new music and established repertoire. She has premiered many works at festivals in the United States and United Kingdom including Artscape Baltimore and the Aldeburgh Festival.

Sara MacKimmie, soprano
Sara MacKimmie, soprano

Praised by the press for her “richness and roundness of tone [and] considerable depth of phrasing," Sara MacKimmie is a Washington, DC-based soprano who specializes in early, ensemble and contemporary music. ​ Sara is a hexaCollective regular. She also performs regularly with the Academy of Sacred Drama in New York and Kinnara Ensemble. Sara completed masters degrees in voice and early music at the Peabody Conservatory of the Johns Hopkins University.

William Marshall, baritone
William Marshall, baritone

Known for his full and lyric baritone, William Marshall is passionate about the study of Renaissance and Baroque repertoires. Despite acting as a specialist in the field of early music, he also performs traditional operatic and art song repertoire. Last spring, he sang as a finalist in the Bach Vocal Competition for American Singers, and a member of the Baltimore Bach Ensemble at Early Music America’s Young Performers Festival, and the American Bach Soloists Academy in San Francisco.

Aaron Peisner, bass-baritone
Aaron Peisner, bass-baritone

Aaron Peisner is pursuing a DMA in choral conducting at the University of Maryland. As the assistant conductor of the UMD Chamber Singers, he has prepared the ensemble for engagements with the Baltimore and National Symphony Orchestras for conductors including Marin Alsop and Gianandrea Noseda. Peisner serves as the chorus master for the Maryland Opera Studio, and has directed the University of Maryland Chorale. He holds degrees from the Yale School of Music and Wesleyan University.

Jacob Perry Jr., tenor
Jacob Perry Jr., tenor

acob Perry Jr. is gaining attention as a young soloist of great musicality and warmth. Jacob has cultivated a passion for a wide variety of music ranging from medieval folk song to the tight harmonies of vocal jazz. He is a core tenor of the soloist-ensemble Les Canards Chantants and the chamber choir The Thirteen. He has been featured as a soloist with Mountainside Baroque, Tempesta di Mare and Apollo's Fire. Jacob can be heard singing with ARTEK, Washington Bach Consort, Cathedra & New Consort

Corbin Phillips, baritone
Corbin Phillips, baritone

Labeled a “standout baritone” by the SF Gate, Corbin Phillips is a Baltimore-based singer who specializes in the Baroque vocal repertoire. Recently, Corbin participated in the Boston Early Music Festival's Young Artist training program and the American Bach Soloists Academy and Festival. Additionally, he has performed with Opera Lafayette, Mountainside Baroque, Baltimore Baroque Band, and the Peabody Consort. He holds a master’s degree in Early Music from the Peabody Conservatory.