Vocology Faculty Bios

Abigail Dueppen                                                                                
Director of Vocology/Instructor/Student Advisor
Office: Speech and Hearing Building, Room 120-H
Phone: 409-880-8176                                                                                
Email: adueppen@lamar.edu
Website: www.abigaildueppen.com

a dueppen                                                                                 

Abigail Dueppen is the Director of the Vocology Certificate Program at Lamar University. A coloratura soprano, Ms. Dueppen has performed in national and international houses to critical acclaim. For more information about her opera, oratorio, and recital career, please visit: www.abigaildueppen.com. Ms. Dueppen holds her Bachelor of Music degree with academic distinction in vocal performance and music education from the Eastman School of Music and her Master of Music degree in vocal performance from the University of Houston’s Moores School of Music.  Additionally, Ms. Dueppen is a licensed and certified speech-language pathologist specializing in voice disorders. She obtained her Master of Science degree in speech-language pathology from Lamar University. During her graduate studies at Lamar, she concurrently served as Adjunct Instructor of Voice in the Music Department. Ms. Dueppen completed her externship at the world-renowned Texas Voice Center at Houston Methodist Hospital, under the tutelage of Jeremy Hathway, Dr. Apurva Thekdi, and Dr. C. Richard Stasney, where she now serves as a speech-language pathologist working with patients with voice disorders. Ms. Dueppen’s research interests include vocal pedagogy, opera performance, and vocology. Her present projects include developing and implementing a Vocology Certificate program at Lamar that is at the forefront of current research, developing an eHealth app to help educate professionals on the proper use and care of the voice, as well as recording and releasing a CD with the chamber music ensemble: The Tephra Collective. Read More


Nandhu Radhakrishnan                                                                      
Associate Professor
Office: Speech and Hearing Building, Room 120-B
Phone: 409-880-7591
Email: nradhakrishn@lamar.edu

Dr. Radhakrishnan

Dr. Nandhu Radhakrishnan completed his doctoral program in 2004 at Bowling Green State University, Ohio under the guidance of Dr. Ronald C. Scherer. His clinical training, on a fellowship, was at the University of Pittsburgh Voice Center under the supervision of Dr. Jackie Gartner Schmidt and Dr. Clark Rosen. His areas of teaching and research include voice science, clinical, occupation and performance related voice disorders, and vocology. He is a member of various professional organizations including American Speech Language Hearing Association, Voice Foundation, Voice and Speech Trainers Association, Pan-American Vocology Association, and Indian Speech and Hearing Association. He is associate professor at the Department of Speech and Hearing Sciences, Lamar University, Beaumont, Texas, where he teaches undergraduate and graduate courses related to voice and speech. Read More

Debra Greschner                                                                                
Instructor of Voice
Office: Simmons Music Building, Room 209
Phone: 409-880-8078
Email: debra.greschner@lamar.edu

debra greschner

Debra Greschner teaches voice, voice pedagogy and vocal literature at Lamar University. A lyric soprano, her appearances include those with the Nevada Symphony, Symphony of Southeast Texas, Nevada Opera Theatre, Chamber Music Southwest, and at Weill Recital Hall at Carnegie Hall. She holds the Bachelor of Music and Bachelor of Education (University of Saskatchewan) and the Master of Music (University of Nevada, Las Vegas).  Greschner has served as Book Reviewer for the Journal of Singing since 2001, and she is a member of its Editorial Board. Greschner has written book reviews for The Opera Journal, and was an invited lecturer for the NATS Internship Program. Before joining the voice faculty at Lamar, she taught at UNLV, and was a member of the Nevada Arts Council’s Artist in Residence roster. Her students have performed in programs such as the American Institute of Musical Studies in Graz and the College Light Opera Company, and have been accepted for graduate studies in both the U.S. and abroad. Read More