“Dog Days Are Over” is a single off of Lungs, and is considered the band’s first big hit in both the US and the UK.

This harp-based track is about suddenly finding happiness, and disbelieving that it’s actually there.

According to one interview, the song title comes from an art piece by Ugo Rondinone.

The song was released as the album second single in 2008 with “You’ve Got The Love” as its B-Side. However, after the album’s success after its release in 2009, the band re-released the song as single in 2010. This time, the B-Side of single was a remix of “Dog Days Are Over”.

Here’s the 2008 original single cover of Dog Days Are Over: