"Mr. Brightside" is the debut single by Las Vegas-based rock band The Killers. The song is featured on the group's debut album Hot Fuss and was written by Brandon Flowers and Dave Keuning.
It was named "Song of the Decade" by UK radio stations Absolute Radio and XFM, and in April 2010 Last.fm revealed that it was the most listened to track since the launch of the online music service, with over 12.2 million plays scrobbled. In October 2010, it was voted ninth in the Greatest Guitar Riffs of the 21st Century so far by Total Guitar magazine. .