"Bad Day '' is a pop song from Canadian singer Daniel Powter 's self - titled debut studio album (2005). It was written by Powter and produced by Jeff Dawson and Mitchell Froom. Powter and Dawson recorded the song in 2002 but could not find a record label to release it at first. The song was first used in a French Coca - Cola television advertisement in Christmas 2004 before its official release. Tom Whalley, Warner Bros. Records ' chairman and CEO, offered Powter a contract after hearing a demo tape of it. This track ended up being released as the lead single in Europe in early 2005.
who sings so you had a bad day
Powter Powter Powter Powter Dawson Dawson