Mr. Poon Kai Ying graduated with an Advance Diploma from the Hong Kong Academy for Performing Arts in 1996, major in Bass Trombone. He then obtained a Professional Diploma in Music in 1997. During his year of studies, he studied trombone with the former Hong Kong Philharmonic Orchestra Principal Bass Trombone, Mr. Philip Brink. He then continued his studies with the former Hong Kong Philharmonic Orchestra Principal Trombone, Mr. Roger Cutts and current Hong Kong Philharmonic Orchestra Principal Trombone, Mr. Jerrod Vernette.

Mr. Poon played in the Summit Brass organized by the Phoenix State University in 1993 and International Brassfest organized by the Indiana University in 1996. In the master class of music camps, he studied with Jeffery Reynolds, Principal Bass Trombonist of Los Angeles Philharmonic Orchestra.

Mr. Poon gained a place in the audition of the Asian Youth Orchestra in 1996 as one of the Hong Kong representatives in an Asia tour to Japan (Tokyo, Kyoto and Osaka), Malaysia (Kulur Lumpar), Taipei, Singapore, Vietnam, the Philippines and Thailand. During the tour, he studied with Mr. John Swallow, Trombone professor of Yale University.

Mr. Poon joined the Hong Kong Sinfonietta as a Bass Trombonist from 1993 to 1999. After 1999, he joined Kaohsiung Symphony Orchestra (Taiwan) as a Bass Trombonist till 2003. He performed in the USA, Shanghai, Shenzhen and Macau. Besides, he also acted as a Band Master and Instrument Tutor for a number of primary and secondary schools in Taiwan. He led the school bands to win different prizes and was finally invited to be the judge of the Taiwan Music Festival.

Mr. Poon returned to Hong Kong in August, 2003. He is currently a Band Master and Instrument Tutor of St Rose of Lima's School. He is also the Brass Coach of St. Paul’s Co-educational College Wind Band, Instrument Tutor of St. Paul’s Co-educational College, St. Paul’s Co-educational College Primary School and SKH Lam Woo Memorial Secondary School.