A native of Hong Kong, Letty Poon is a sought-after cellist for various solo, chamber, and orchestral performances. Her performance engagements have taken her to the Mainland China, Taiwan, Thailand, Japan, Italy, France, Spain, and Austria for Pacific Music Festival, Carinthian Festival, Prades Music Festival and Zell an der Pram chamber music festival as such, in addition to her regular concert appearances in Hong Kong. 
 

Poon co-founded the Hong Kong International Cello Association and the Cellistra, a cello ensemble with professional cellists, in 2004 to promote cello music and cello playing in Hong Kong. In 2018, she founded the Pacific Cello Orchestra to provide professional training for young cellists aged 18 or below in the summer holidays.