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Meet the Directors

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Phillip Cadenhead

Director of Bands

Phillip Cadenhead became the Director of Bands at Juan Seguin High School in July of 2017. Prior to coming to Seguin, he was Director of Bands at Western Hills High School in Fort Worth. He has previously served as band director at Red Oak High School, Barnett Junior High, and Mesquite High School. 

Originally from Crestview, Florida, Mr. Cadenhead attended Louisiana State University for his bachelor's degree in Music Education. There he studied under the batons of Frank Wickes and Dr. Linda Moorhouse. He studied privately with Larry Campbell and Dr. Joseph Skillen. He received his Master of Music Education degree from the University of North Texas and a Master of Educational Administration degree from Lamar University. Prior to coming to Region 5, Mr. Cadenhead served as the Vice President and later the President of TMEA Region 20. His professional affiliations include Texas Music Educators Association, Texas Music Adjudicators Association, Texas Bandmasters Association, and Phi Mu Alpha Sinfonia. 

Bands under his direction have been consistent UIL Sweepstakes award winners. Marching bands have made consistent finals appearances at invitational marching contests. Concert bands have received distinctions as Best in Class at the South Coast Music Festival, Winter Park Ski Music Festival and the Pride of New Orleans Music festival. Under Mr. Cadenhead's direction, the Red Oak Jazz Band was named the Grand Champion of the Winter Park Ski Music Festival. 

Mr. Cadenhead enjoys Crossfit, Adventure Racing and traveling with his wife, Lindsay, and two sons, Alex and Ashton.

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Pedro Maldonado

Associate Band Director

Pedro Maldonado is currently in his 13th year of teaching. He is the Assistant Director at Juan Seguin High School in Arlington, TX.

Mr. Maldonado previously taught in Duncanville ISD at Reed Middle School. During this time the varsity band at Reed won numerous awards as well as consecutive UIL sweepstakes and advancing to the TMEA Honor Band Area level twice.

Duncanville was also Mr. Maldonado’s hometown growing up. In high school he was a part of both the 2002 State Champion Marching Band, and the 2004 TMEA Honor Band, both under the direction of Dr. Tom Shine & Brian Merrill. His student teaching was completed at Duncanville in 2010 during Dr. Shine’s final semester before retiring.

Mr. Maldonado received his Bachelor of Music Education from Howard Payne University in Brownwood, TX. He was a member of the HPU Jazz Ensemble, a soloist with the Yellow Jacket Marching Band for four years and toured internationally with the group Winds of Triumph.

Mr. Maldonado maintains an highly active performing schedule playing in groups across the U.S. on a monthly basis. In his spare time Mr. Maldonado enjoys all things Jazz, reading books, listening to podcasts, playing video games, and having a winning smile.

Mr. Maldonado resides in Cedar Hill with his wife Rachel, his son Luke and their two dogs Estes & Brooklyn.


Koby Chiou currently serves as the Director of Percussion at Juan Seguin High School, where he coordinates the marching percussion program, 7th-12th grade concert percussion ensembles, and teaches beginning and 8th grade percussion classes at Ousley Junior High. 


Mr. Chiou is originally from Houston, TX where he went to schools in Spring Branch ISD. He then went to Baylor University where he received a degree in Music Education. During his Baylor career, he performed with the Baylor Wind Ensemble, Symphony Orchestra, Symphonic Band, Jazz Combo, and served as the Drumline Section Leader for the Golden Wave Band. At Baylor, Mr. Chiou studied under the baton of Dr. Eric Wilson, Dr. Isaiah Odajima, and Dr. Miguel Harth-Bedoya, he studied privately with Dr. Todd Meehan, Dr. Ed J Taylor, Mr. Arlo Schultis, Mr. Scott Taylor and Mr. Chris Sies. 


In addition to his Baylor Education, Mr. Chiou also has a background in the highest level of the marching arts. He has experience in both World Class Drum Corps and Indoor Percussion Groups, most recently Monarch Independent.

Koby Chiou

Director of Percussion

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Dwayne Stokley, a native of East Tennessee, has been involved with the Marching Band and Pageantry Arts for most of his life. While attending East Tennessee State University, Mr. Stokley was the director of the color guard and Winterguard there as well as numerous groups in Tennessee, Virginia, North Carolina, Kentucky, Illinois and Wisconsin.

During his time in the Midwest, he was the Guard director at UW Whitewater as well as Whitnall High School, a consistent State Band and Color guard champion at the WSMA State Marching contest and WGI semi- finalists.

Mr. Stokley came to Texas in 2000 and has been involved with Arlington and Fort Worth bands and Winterguards, producing numerous successful programs. Under his direction, the Seguin HS Winterguard earned the bronze medal in 2018, and earned the gold medal in 2019 at the NTCA Winterguard Championships. 

Dwayne Stokley

Color Guard Director

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Franklin Garza

Associate Color Guard Director

Franklin Garza is from Arlington, Texas. He began his dance and performance career with the Sam Houston High School Colorguard and dance program. He eventually joined Winter Guard International and Drum Corps International, where the members are expected to compete at a high level of excellence. These organizations helped develop his passion for dance. 

In 2010 he danced for Tarrant County College, where he was a member of the dance company and performed numerous times throughout the Dallas/Fort area. In 2011 he was accepted to the Dance Program at Texas Woman's University where he worked toward his BA in Dance Performance. He performed many pieces with the Dance Program at TWU and performed with TWU at ACDFA. He began teaching dance and colorguard in 2009, where he specialized in movement. He has been teaching at many prestigious guard and dance programs in Texas, such as CGT Ft Worth Independent Winterguard, Insignia Independent Winterguard, Blackgold Independent Winterguard, Sam Houston High School, Aledo High School, Rowlett High School, Wylie High School and Odessa High School. He has been a part of dance studios such as Power House of Dance and Moving Canvas Dance Space. He is excited to work with the staff and students at Juan Seguin High School Cougar Band!


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Tony Sandoval

Ousley Junior High Director


Vivian Cooper serves as the Assistant Band Director at Ousley Junior High. Ms. Cooper is a proud graduate of Oklahoma City University, earning her Bachelor’s of Music Education in 2023. During her time at OCU, Ms. Cooper was selected as an Honors Concerto Winner in 2022, as well as placing in the Ladies Music Club Reeded Woodwind Scholarship Competition. She performed in many ensembles, including the OCU Wind Ensemble, Wind Philharmonic, and Saxophone Studio Ensemble. Ms. Cooper also held a private studio of saxophone students ranging from junior high to high school, with her students receiving superior ratings in Solo and Ensemble contest and advancing into Central Oklahoma’s Honor Bands.

Vivian Cooper

Ousley Junior High Director

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