Immersion is the third studio album by Australian band Pendulum. The album was announced in early 2009, with the name being confirmed in December 2009. The album was released 21 May 2010 in Australia and Ireland, and 24 May for the rest of the world, followed by a UK tour of the album. In January 2010 Pendulum hosted the album preview Ear Storm event at Matter in London in which many top DJs performed sets of their own with Pendulum being the headliners.
The track "Ransom" was originally included in the album but it was later dropped as it "didn't fit the sound of the album". The band later stated that "Ransom will be either released as a free download to fans or a B-side but it will definitely see the light of day".Rob Swire later stated that "Ransom" won't be released because he found the song to be "boring" after the intro, however that most of the project files for the song were corrupted when his MacBook hard drive malfunctioned. However on 6 April 2011, "Ransom" was released as a download only single on the group's website in aid of Japan's earthquake appeal, and entered the UK Singles Chart at no. 193 the following week.