Principal Soloists

Katharine Lawton Brown, principal alto

Katharine Lawton Brown’s singing career began in musical theatre and extends to opera, oratorio, art song, standards and jazz. With professional experience at St. Louis MUNY Opera and the Florida Symphony Orchestra, Kathy became principal contralto and soloist with the United States Air Force Band’s “Singing Sergeants” under the renowned conductor, Col. Arnald D. Gabriel, USAF.

Kathy has performed extensively throughout the USA, in Canada and in China, has appeared as soloist on international radio and TV, and is much in demand as a guest artist with prominent choral, orchestral and chamber ensembles. Her appearances include the Tulsa Oratorio Chorus and Symphony Orchestra, the Milwaukee Symphony Orchestra and Chorus, the Folger and 20th Century Consorts of Washington, DC, and the Arianna String Quartet. She premiered Claude Baker’s “Sleepers Awake” with the Saint Louis Symphony Orchestra and has performed regularly with members of that orchestra on the Bach at the Sem series. Since 1993, she has served as principal contralto and soloist with the American Kantorei under the direction of eminent Bach scholar, the late Rev. Maestro Robert Bergt. From broadcasts of those concerts and her familiar presence as an announcer, her voice is well-known to those who were listeners of KFUO-FM Classic 99.

Holding a BA from Rollins College (FL) and her MM from James Madison University (VA), Kathy has taught at colleges and universities in Virginia, Georgia, Missouri and Illinois. She joined the music faculty of Greenville College in 2007, serving as Interim Director of Vocal Studies in 2010-11.


Jeffrey Heyl, principal bass

Dr. Jeffrey Heyl, a native of St. Louis, holds degrees from the Eastman School of Music, the Hartt School of Music, and the University of Iowa. He has served in musical positions at several area institutions, including Lindenwood University, Urshan College, Covenant Seminary, St. Charles Community College, Missouri Baptist University, Bluefield College, Kirk of the Hills Presbyterian Church, and Green Trails United Methodist Church, where he is currently Director of Music and Worship. Dr. Heyl has sung extensively in opera, oratorio, recital, and music theatre, including leading roles in I Pagliacci, Cavallaria Rusticana, Susannah, Hello Out There, Die Fledermaus, There and Back, and Amahl and the Night Visitors. He is presently a member of the St. Louis Symphony Chorus and has sung solos with conductors David Robertson and Nicholas McGegan, as well as the part of Raven for Robert Kapilow’s Summer Sun, Winter Moon with the composer conducting. In 2009 he accomplished a long cherished goal of performing Schubert’s Die Winterreise. He has been soloist with the Masterworks Chorale, with the Bach Society of St. Louis in Vaughan Williams’ Fantasia on Christmas Carols and Bach’s St. John Passion, and in Brahms’ Ein Deutsches Requiem with Missouri Baptist University, the University of Missouri/St Louis, and Webster Groves Presbyterian Church. Dr. Heyl recently sang in Carmina Burana at Webster University, a program of Mahler and Beethoven with the St. Louis Philharmonic, and an opera program with the St. Charles Brio concert series. Other recent performances include the title role in Mendelssohn’s Elijah with Parkway North High School, Orff’s Carmina Burana with University of Missouri/St Louis at the Touhill Center, Handel’s Messiah with Greenville College, and the Midwest premiere of Mark Hayes’ Requiem. Dr. Heyl has sung with the American Kantorei since 2012.


Scott Kennebeck, principal tenor

Scott Kennebeck, a native St. Louisan, has been singing since the age of 8, beginning his career in the Cathedral of St. Louis Pontifical Boys Choir under Dr. Mario Salvador. He earned a Bachelor’s Degree in Fine and Performing Arts/Music and Theatre from St. Louis University and has studied voice with Dr. Jeral Becker at SLU and Christine Armistead at Washington University. Since 1993 Scott has been the tenor section leader for the Cathedral Basilica of St. Louis Choir and the Archdiocesan Choir of St. Louis. He is also cantor for the Cathedral Parish, as well as for major Archdiocesan events. He was a cantor / soloist for over 100,000 in attendance and a worldwide television broadcast audience at the Papal Mass in St. Louis in 1999 and for 30,000 in attendance at the Eucharistic Congress in St. Louis in 2001. He has toured as soloist throughout the United States, Italy, England, Germany, and Austria. His performances include Verdi’s Requiem in Rome, Italy; Hector Berlioz’s Te Deum in the Cathedral Basilica of St. Louis; and numerous performances of Handel’s Messiah and other oratorios, including The Seven Last Words of Christ by Dubois at Our Lady of Sorrows Catholic Church in St. Louis as part of their 150th Anniversary celebration. Scott has also performed with Union Avenue Opera and the St. Louis MUNY Opera. In addition to vocal performance, Scott is the Executive Director of St. Louis Cathedral Concerts.


Emily Truckenbrod, principal soprano

Emily Truckenbrod has appeared in recital, concerts, and opera throughout the United States, as well as in Italy, France, Austria, Honduras, and Tanzania, East Africa.  Her voice has been described by reviewers as “having sweet clarity” that “personifies the joy of the music.” On the opera stage, she has appeared in roles ranging from the Queen of the Night (The Magic Flute) to Oscar (Un Ballo di Maschera).  Equally comfortable with oratorio and orchestral works, Ms. Truckenbrod has appeared as soloist with the Tulsa Oratorio Chorus, the Louisiana Philharmonic Orchestra, the Wichita Symphony, the Canterbury Choral Society and Oklahoma City Philharmonic, the Quad Cities Symphony Orchestra, the Richmond Symphony, The Handel Oratorio Society, the American Kantorei, the LaFosse Baroque Ensemble, Concert Choir of Northeast Connecticut, and the Northshore Choral Society, among others.

Dr. Truckenbrod holds the Doctor of Musical Arts and Master’s Degree from the University of Iowa and a Bachelor of Music from Northern Illinois University.  She has also completed studies at the Mozarteum in Salzburg, Austria; at the Eastman School of Music; and as an intern with the National Association of Teachers of Singing Intern Program.  Dr. Truckenbrod is currently the Director of Vocal Studies at Southern Illinois University Edwardsville and serves as the Faculty Advisor for the St. Louis Chapter of SNATS (Student National Association of Singing).