Question: Which rock band released the album "Megalithic Symphony", Awolnation or World Party?
Context: Awolnation is an American alternative rock band, formed and fronted by Aaron Bruno, formerly of Under the Influence of Giants, Home Town Hero, and Insurgence.  The band is signed to Red Bull Records, and their first EP, "Back from Earth", was released on iTunes on May 18, 2010.  They released their first studio album, "Megalithic Symphony", on March 15, 2011; it featured their most notable hit, "Sail", which peaked at #17 on the "Billboard" Hot 100, #4 on the "Billboard" Rock Songs chart, and #5 on the "Billboard" Alternative Songs chart.  The song has been certified 6× platinum by the RIAA and has sold 5,500,000 copies in the United States.  As of February 29, 2016, the album has been certified platinum. Megalithic Symphony is the debut studio album by American alternative rock band Awolnation, released on March 15, 2011 through Red Bull Records.  The album is the band's first full-length release, following the release of the extended play "Back from Earth" (2010).  "Megalithic Symphony" has since peaked at number 84 on the United States "Billboard" 200 and at number 57 on the Austrian Albums Chart.  As of March 2015, the album sold 581,000 copies in the United States. American alternative rock band Awolnation has released two studio albums, three extended plays, eight singles and ten music videos.  The band is signed to Red Bull Records, and their first EP, "Back from Earth", was released on iTunes on May 18, 2010.  They released their first studio album, "Megalithic Symphony", on March 15, 2011; it featured their most notable hit, "Sail", which peaked at #17 on the "Billboard" Hot 100, #4 on the "Billboard" Rock Songs chart, and #5 on the "Billboard" Alternative Songs chart.  The song has been certified 6× platinum by the RIAA and has sold 5,500,000 copies in the United States.  As of February 29, 2016, the album has been certified platinum.  The band's second studio album, "Run", was released on March 17, 2015. "Not Your Fault" is a song by American alternative rock band Awolnation.  It was originally written by frontman Aaron Bruno and recorded by the band for their debut studio album "Megalithic Symphony", where it appears as the twelfth track.  "Not Your Fault" was released to American modern rock radio on October 17, 2011, and was also released as a single in the United Kingdom and Bosnia on February 26, 2012.  The single peaked at numbers three and eleven on the US "Billboard" Alternative Songs and Rock Songs charts, respectively. Bang!  is the third album by British group World Party, released by Ensign Records on April 26, 1993.  While previous World Party albums were essentially solo projects by one-man orchestra Karl Wallinger, for this album World Party officially became a three-person group: Wallinger (vocals, keyboards, guitars, basses, etc.), Dave Catlin-Birch (guitars), and Chris Sharrock (drums).  As well, the band is aided by a number of guest artists. " Private Revolution " is the 1986 debut album by the British rock band World Party.  At this point, singer-songwriter/multi-instrumentalist Karl Wallinger was the only member of World Party, and the only person pictured on the cover. Back from Earth is the debut EP by American alternative rock band Awolnation.  It was released digitally by Red Bull Records on May 18, 2010 for iTunes. " Sail", "Burn It Down" and "Guilty Filthy Soul" appear on "Megalithic Symphony", the band's debut album.  The EP also features a dubstep remix for "Burn It Down" by Innerpartysystem, which appears on the deluxe version of the album along with "MF". "Kill Your Heroes" is a song by American alternative rock band Awolnation.  It is written by lead singer Aaron Bruno and musician Brian West for the band's debut studio album "Megalithic Symphony", where it appears as the eighth track.  "Kill Your Heroes" was released as the third and final single from "Megalithic Symphony" and reached the top 20 of the United States "Billboard" Alternative Songs and Rock Songs charts. World Party is a British alternative rock band, which is essentially the solo project of its sole member, Karl Wallinger.  He started the band in 1986 in London after leaving The Waterboys. "Sail" is a song by American alternative rock band Awolnation.  It was released as a single on November 8, 2010.  The song was first featured on the band's debut extended play "Back from Earth" (2010) and was later featured on their debut album "Megalithic Symphony" (2011).  The song was written and produced in Venice, California by group member Aaron Bruno, with Kenny Carkeet performing the audio engineering.
Answer: Awolnation