One of the key figures behind the immense success of the Phimai Witthaya School Marching Band in Nakhon Ratchasima Province is Mr. Sorachai Jongkol. He is the band director who has dedicated his heart and soul to leading students onto national and international competition stages. Currently, Mr. Sorachai holds the position of Teacher, Academic Standing of Expert Specialist, at Phimai Witthaya School, under the Nakhon Ratchasima Secondary Educational Service Area Office. He was born on May 31, 1971, and is currently 54 years old.

In his work and life, Mr. Sorachai adheres to his guiding principle, the "3 L's" (derived from the Thai word "อย่า," or "Don't"). This is a core tenet he uses to remind himself and instill in his students: "Don't be arrogant," "Don't forget your roots," and "Don't forget those who have shown you kindness." In addition to this life philosophy, Mr. Sorachai also instills five key principles for musical practice in his students: Patience, Punctuality, Unity, Discipline, and a true Passion for music. With these firm principles, he has dedicated himself to continuously developing the potential of the Phimai Witthaya School Marching Band, resulting in recognized achievements and bringing fame to the school and the nation.

The path of success under Mr. Sorachai Jongkol's direction began spectacularly in 2018 on the stage of the Thailand World Music Championships (TWMC, 2018). The band captured two prestigious awards: the Championship title for the Woodwinds Battle Professional Class and the Championship title for the Street Parade Division 1, receiving the Prime Minister's Trophy of Honor.

Four years later, in 2022, he reaffirmed their excellence at the Band Competition of Thailand (BCT), organized by the Band Association of Thailand and sanctioned by the Asian Marching Band Confederation (AMBC), by winning the Championship title in the Concert Marching Arts category.

2023 was a golden year, as the Phimai Witthaya Marching Band swept major awards from two important national stages. Starting with the TWMC, 2023, they won the Championship in the Marching Field Show Student Class and were honorably bestowed the Royal Trophy from Her Majesty Queen Suthida Bajrasudhabimalalakshana. This was followed by the Championship in the Marching Field Show (Senior High School) category at the BCT.

Their success did not stop domestically. Most recently, on May 11, 2024, the "Phimai Witthaya School" Marching Band gained international acclaim by winning the prestigious BEST MUSIC AWARD at the 2024 POWERFUL DAEGU FESTIVAL in Daegu, South Korea.

All these achievements reflect the determination, vision, and capability of Mr. Sorachai Jongkol. As a leader and a creator, he not only teaches music but also builds character, truly guiding the Phimai Witthaya School Marching Band to continuous and outstanding success.

Katayut Phaphong graduated bachelor's degree from Kasetsart University in the faculty of Humanities majoring in Western Music. During his university time, He studied Trumpet with Prof. Dr. Surasi Chanoksakul and Prof. Pitipong Pookaew. In his master’s degree, He had studied Trumpet Performance with Asst. Prof. Dr. Joseph Bowman, at the College of Music, Mahidol University. He had a chance to Trumpet Masterclass by several world renowned trumpeters such as Jens Lindemann, David Rouault , Carole Reinhart, William Day ,Jon Dante, Dai Zhonghui, Brian Chin, Tomonori Sato, Kenji Fujishima, Steve Cannon. He has been participating in various bands including Thailand Philharmonic Orchestra, Bangkok Symphony Orchestra, Bangkok Charity Orchestra, Nontri Orchestra Wind, Kasetsart Winds, Mahidol Wind Symphony, Mahidol Symphony Orchestra, Mahidol Brass Band, The Green Brass Band, Zalymanian Wind Orchestra.

Currently, he serves as a Lecturer in the Music Education Program, Department of Music, Nakhon Ratchasima College of Dramatic Arts, Bunditpatanasilpa Institute. and He is the founder of Nakhon Ratchasima College of Dramatic Arts Wind Symphony and Marching Band. which has achieved numerous accomplishments at both national and international levels.
He has also served as a clinician for many renowned wind bands, such as those at Northeastern Technological College, Suranaree Wittaya School, and Ratchasima Witthayalai School. Furthermore, he has been invited to serve as an adjudicator for marching band competitions both domestically and internationally.

With a passion for music and a dedication to the teaching profession, **Miss Siriwan Khumkan**, a graduate from the Music Education program, Faculty of Humanities and Social Sciences at Muban Chombueng Rajabhat University (Born December 5, 1999; currently 25 years old), has dedicated her knowledge and youthful energy to developing students at Satit Ratsadonburana Municipal School.

The journey of this marching band did not begin with perfect resources. In the first two years of its establishment, students used "melodicas" as their primary instruments for competition. However, through the dedication of their teacher and the efforts of the students, this small ensemble developed rapidly, transforming into a full-scale marching band using standard instrumentation, ready for more challenging stages.

Their performances on the competition field reflect a continuously evolving creativity. It began with their first TWMC competition, where they made an impression with the theme "Captain America." This was followed by a mysterious and intriguing performance in the "Wednesday RDS" theme for their second Ratchaburi Demonstration marching Band competition. Most recently, at the third Ratchaburi Demonstration marching Band competition, they are ready to captivate the audience with the elegant theme "Phantom’s Masquerade."

Behind this remarkable success and development, Miss Siriwan clearly states her perspective: "This success and victory would not be possible without the determination of students who are committed to competing and to their own development. Likewise, it would not happen without a talented and compassionate coaching team that dedicates themselves to training the children." This is a clear testament that true success is born from the combined power of student determination and the devoted hearts of the instructors working as one.

Yutthasak Pothirook was born in Maha Sarakham Province and began his musical journey at the age of 13 as a Baritone and Euphonium player with the Kosum Wittayasan School Marching Band. He participated in the 2005 Royal Trophy Marching Band Competition, where he helped the band secure a Gold Medal. In 2008, he moved to Bangkok to continue his education at Surasakmontree School, joining the school's Brass Band under the training of Mr. Khanesorn Srirong and Mr. Steve Blakely, a former member of the Blue Devils Drum & Bugle Corps. In 2009, he competed in the 16th World Music Contest (WMC) in Kerkrade, Netherlands, achieving a Gold Medal with Distinction and the 1st Runner-up award.

Regarding his higher education, Yutthasak holds a Bachelor of Fine and Applied Arts in Music and Performing Arts, majoring in Euphonium, from Burapha University (2013). During his undergraduate studies, he studied under Mr. Manit Buchachanok, a former the Principal Tuba of the Royal Bangkok Symphony Orchestra and the Thai National Symphony Orchestra. He also participated in Euphonium workshops with renowned artists such as Steven Mead, Misa Mead, Roger Bobo, and Hidehiro Fujita at the TUBA Mania International Festival. Later, he earned a Master of Education in Educational Administration from Kasetsart University (2021) and a Graduate Diploma in the Teaching Profession from St. John’s University. Additionally, he pursued specialized studies in music composition with Dr. Wongwatcharasan Kitprasert, conducting with Asst. Prof. Santi Dejkhamrone, band management with Asst. Prof. Dr. Ronnachai Rattanaseth, and marching band arranging with Key Poulan.

Professionally, Yutthasak served as the Hornline Instructor for Sakol Suksa Bangbuathong School, leading them to win the Royal Trophy of H.R.H. Princess Chulabhorn in 2012 and the Junior Division Championship at the Hong Kong International Youth Marching Band Competition that same year. In 2013, as the Hornline Instructor for Surasakmontree School, he contributed to the band winning a Gold Medal with Distinction and the World Championship title in the Corps Style Class (World Division) at the 17th WMC in the Netherlands. He also co-founded "Extreme Corps" in 2012, which became the first band in Thailand to win the Brassline Battle Championship at the Thailand World Music Championships (TWMC) in 2013. He is currently the Conductor and Euphonium player for the Bangkok Brass Band (Japanese Wind Ensemble), a position he has held since 2023.

Currently, Yutthasak Pothirook is a Civil Servant Teacher in the Arts Department at Surasakmontree School, Bangkok, under the Ministry of Education. He has served as the Director of the Surasakmontree Brass Band from 2017 to the present. Under his leadership, the band has achieved distinct success at both national and international levels. These achievements include winning the Royal Trophy of H.M. the King at the Thailand International Marching Competition (TIMC) 2024 and the Valaya Alongkorn Music Competition (VAMC) 2024. His band also won the Royal Trophy of H.R.H. Princess Maha Chakri Sirindhorn at the Asia Marching Arts 2018 in the Independent Percussion Ensemble category, and at the BSRU Thailand Marching Band Competition in 2019 and 2020 in the Drumline Battle Division 2. Other accolades include a Gold Medal at the Music & Marching Arts International 2019, a Certificate of Merit at the Thailand International Band and Orchestra Festival 2019, and a Gold Medal with Distinction (Score 91.00) in the Youth Percussion Ensemble category at the CGN UNITED competition organized by Color Guard Netherlands.

Beyond competitions, the Surasakmontree Brass Band has established a strong reputation through high-profile performances, including appearances in the TV series The Rhythm of Life, the opening ceremony of the AFC U17 Asian Cup Thailand 2023, commercials for Teh Pucuk Harum (Indonesia) and Under Armour, and the Pride Parade festival.

Yutthasak is also widely recognized as an arranger for marching bands and wind orchestras. His works have been performed domestically and abroad by groups such as the Burapha University Wind Symphony, Kasetsart University Wind Symphony, MUPA Chorus, Surasakmontree Brass Band, Santa Cruz Convent School Wind Ensemble, Sakol Suksa Bangbuathong Marching Band, Vorrarat Suksa Marching Band, Sarasas Suksawad Marching Band, Satri Prasertsin Marching Band, Jitsin Philharmonic Orchestra (Malaysia), Sam Tet Brass Band (Malaysia), and Fourtissimo Quartet (Singapore). His commercial arranging portfolio includes the Opening Show for The Show on Workpoint TV, the corporate anthem for CPF, and the music for the "Band Battle" scenes in the TV series The Rhythm of Life.