Sam Tsui:Heart Attack - Demi Lovato (with Chrissy Costanza of ATC)(中文字幕) - YouTube
No copyright infringement intended and I DO NOT OWN THIS, I just too love this one so I make a Chinese subtitle version. :) This video is just the Chinese TRANSLATED version, which is ONLY for sharing. 無意侵犯版權,我並不擁有這部影片,我只是太喜歡了所以做了中文字幕版本 ......