The Pendulum sound is typically heavy beats accompanied by low, buzzing basslines, overlaid with synthesized leads. When Pendulum started out as producers in Australia, their sound was considerably more drum and bass-influenced than the work they are known for today. Over time, this led to a change of audience and listeners from underground to mainstream listeners.
Pendulum's current musical style consists of a fusion between electronica and rock, with the inclusion of acoustic instruments. Songs such as Propane Nightmares and Granite continued to be synth-led, whilst others, such as Showdown and The Tempest, were guitar-led. Gareth McGrillen stated in an interview on Channel 4 that they use 13 computers during the live performances, all of which are mixing up the sounds produced by the instruments in real time.
Signature tunes such as "Vault", "Back to You", "Voyager" and "Toxic Shock", which were released on labels such as Uprising Records, Renegade Hardware and Low Profile Records, have a darker, more amelodic air to them which is substantially absent from their later productions, which are generally leaning heavily towards a mainstream, dance-driven sound. Early work such as "Another Planet" however, seems to indicate an early affinity with a more global sound, similar to other Breakbeat Kaos artists such as DJ Fresh and Adam F. Their new track "Ransom" was played at their Noisia set at WMC.
The group has produced various remixes of other artists also; the most well-known being their remix of "Voodoo People", originally by The Prodigy. Pendulum have also remixed themselves. In 2006, their collaboration with the Freestylers - "Painkiller" - was remixed by NOISIA and released on Against the Grain Records. In 2008-2010, they covered songs including Led Zeppelin "Immigrant Song", Coldplay's "Violet Hill", Metallica's "Master of Puppets", Calvin Harris' "I'm Not Alone" and remixed Plan B's "Stay Too Long". Currently, only The Prodigy remix, Plan B remix and a Radio 1 recording of the Violet Hill cover have been released to purchase, although a full studio version of the Master of Puppets remix does exist.