Sammul Chan imitated Vivian Chow singing 《自作多情》.
 Sammul Chan imitated Michael Wong singing 《童話》.
Personal Note: Ha ha.... The little boy's reaction at the beginning of the first clip was quite hilarious! :P
Sammul's look as Vivian Chow is prettier than his female look in "A Bride for a Ride"! :P
At a certain angle, Sammul did resemble Michael Wong. He sings with such emotion...love it! :)