"Rabbit Heart (Raise It Up)" will be released as the fourth single from LUNGS, the debut album by Florence and the Machine. The track was produced by Paul Epworth. The single was released off the Island Record Label on June 22, 2009. A music video has accompanied the release of the song and is currently circulating around the music channels. The song currently sits on the Radio 1 A-List, which means it usually has just over 20 plays a week.. It was written by Florence Welch and Paul Epworth.

The video starts with a piece of cloth being lifted from in front of Florence's face, she then starts twirling as two girls follow her, then the girls start to dance all around the field. You then see a harp being played and then Florence joins in the dancing. She then sits at a table with 6 other people including a man with a top hat on, there are pig heads served on a plate. Florence and the other 6 people then chuck the food on the floor and start to dance. She then lies down on the table and the other people bring up the sides to make it into a box. They then lift the box into the river and it drifts away with the video finishing. The video was uploaded on May 14, 2009 and has so far been viewed over 200,000 times.