Wilbert Deil graduated from Universitas Pelita Harapan Conservatory of Music in the music composition program under the guidance of Bobby Limijaya and Renardi Effendi. He also pursued a minor clarinet program with one of the leading clarinet artists in the country, Nino Ario Wijaya. He has participated in the Yamaha Electone Concourse 2012, Tokyo - Japan, with his piece "Journey To Independence," representing Indonesia and Asia-Pacific. After that, he worked part-time as a music director for many commercial and non-commercial projects with Halmahera Music School Semarang for more than five years. He has collaborated with the UPH Symphony Orchestra, the UPH Symphonic Band of Universitas Pelita Harapan, the Catholic Fellowship Jakarta Choir, Bina Musik Jakarta, Klassikhaus, the Embassy of Hungary in Jakarta, Jessica Januar, and soprano Sashi Evelyn. Besides that, he also created commercial work for Xing Fu Tang, Atria Inspiring Living, CISCO Indonesia, and Sorong Modern City.

Inspired by personal quotidian life, his music offers an intuition that he perceives as real and honest. In his works, being aware of his existence is far more important than any external illumination. The existence of every element matters and needs to be treated equally.