Kelvin Kwan was born and raised in Canada; his father was a former executive of PolyGram and a friend of Hong Kong pop singer Alan Tam. As a result, Tam became Kwan's godfather. Also, he is the nephew of Teddy Robin Kwan. In 2004, during the summer vacation after his first year of university in Toronto, he went on a trip to Taiwan; after a night of karaoke with his father's ex-coworkers, Kwan was offered an audition, and was signed to Universal Music's Taiwan division. A year later, he moved to Hong Kong. Tam's relationship with Kwan continued to prove a boost to Kwan's career; in August 2006, the pair recorded a music video of the duet "''Big Cry Baby'' ", which secured Kwan's popularity in the Hong Kong music industry. However, Tam has not been reticent in pointing out Kwan's flaws and errors publicly; in a September 2006 interview with the ''Sing Tao Daily'', he criticised Kwan's public speaking abilities and suggested he concentrate harder on singing during performances; Kwan reportedly felt awkward and hurt by Tam's words. Regardless, Kwan still credits a great deal of his success to Tam, claiming that he would not be where he is today without his help and guidance.