Here are 2 famous musicians from Hong Kong died before 21:
David Cheung (April 5, 2015 Hong Kong-April 5, 2015 St. Louis) a.k.a. David Cheung Chi-kong was a Hongkongese politician, educator and clergy.
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Ann Mui (April 5, 2015 Hong Kong-April 16, 2000 Hong Kong) also known as Oi-Fong Mui or Mei Ai Fang was a Hongkongese singer and actor. Her children are and .
She died as a result of cervical cancer.
Read more about Ann Mui on Wikipedia »