Active as a teacher, Leslie has taught at the National University of Singapore and International School Bangkok, among others. He has performed with various musical groups such as the Academies Festival Orchestra, Changrai Youth Orchestra, Singapore Jazz Orchestra and the SAF Music and Drama Company. Highlights of his career includes working with famed singer Dame Kiri Te Kanawa, conductors Julian Reynolds, William Johnson, Toshio Akiyama, Toru Miura and composer Eric Whitacre.
Leslie co- founded the Amigo Saxophone Quartet in 2008, a group which has performed educational tours since 2009, in parts of Asia, such as Bangkok, Hatyai, Hong Kong, Kuala Lumpur, Macau and Singapore. The Amigo Saxophone Quartet is an advocate of new saxophone music, and has premiered new works by Dr. Jeremiah Li Kai Han, Dr. Zechariah Goh and Dr. Richard Tsang, among others
From 2006 to 2010, Leslie was a grant recipient from the National Arts Council (Singapore) for his studies at the Mahidol University, College of Music. In 2010, he was awarded the honorary Brandon L. Hudson award for his work with the Western Thunder Marching Band. In 2011, Leslie was nominated into Pi Kappa Lambda for his superior scholastic work at the University of Wyoming.
Leslie is currently a lecturer of saxophone at the Nanyang Academy of Fine Arts and School of the Arts. He also maintains an active private saxophone studio in Singapore.
Leslie is a Selmer Paris and D’Addario Woodwind artist and plays on Selmer Paris saxophones and D’Addario Woodwind reeds exclusively.
Personal Web page: www.lesliewongsax.com