Question: What was the name of the keyboardist and songwriter who formed the electronic music group whose fifth studio album was Invaders Must Die?

Context paragraphs:
TOI (band): TOI, pronounced "toy" and sometimes mistakenly referred to by the name of its website ""TOI Kingdom"", is a Filipino indie musical group whose musical range includes folk rock, blues, jazz, and electronic music, often in some experimental combination.  Conceived in 2007 by Mei Tayengco, Pat Tirano and Pauline Diaz, the group was named TOI in acknowledgement of Tayengco’s vision of the group as “"a plaything created by three minds."”  Tirano and Diaz form the musical core of the band, with numerous other musicians contributing to the band's sound over the years, while Tayengco serves as the band's artistic manager of sorts.

Omen (The Prodigy song): "Omen" is the nineteenth single released by the British electronic band The Prodigy.  It was released on 16 February 2009, and it is the first commercial single from the album "Invaders Must Die".

Warrior's Dance: "Warrior's Dance" is the twentieth single released by the British electronic band The Prodigy on 11 May 2009, and it is the second commercial single from the album "Invaders Must Die" after "Omen" and the free "promo" single "Invaders Must Die".

Authority (album): Authority is the fifth studio album by British electronic music group Client, released on 21 March 2014 through German electronic music label Out of Line.

Invaders Must Die (song): "Invaders Must Die" is the eighteenth single released by the British electronic band The Prodigy.  It was released from the band's website as a free digital download on 26 November 2008.  It was the first single from the album "Invaders Must Die".  The download was announced on 24 November, in a newsletter sent to fans, and first aired on Zane Lowe's Radio 1 show as his 'Hottest Record in the World' on 26 November.  The song was co-produced by Does It Offend You, Yeah? 's James Rushent.  Liam Howlett described this to the Dubai edition of Time Out as: "a very abrasive-sounding electronic track, kind of different to anything we've done before."  Although not being a commercial single the track charted at 49 in the UK Singles Chart on 1 March 2009, whilst the Chase & Status Remix reached 53 in the Australian Aria Singles Chart and 7 in the Aria Dance Chart.  On 30 November 2009 the re-amped version by Liam was released as an EP with the B-side Mescaline, and Thunder remixes.

Take Me to the Hospital: "Take Me to the Hospital" is the twenty-first single released by the British electronic band The Prodigy.  released on 31 August 2009, the CD single includes the Sub Focus remix and the 12" single also includes a Rusko remix.  Liam also collaborated with Josh Homme to create the "Wreckage" mix of the song.  It is the third commercial single from their fifth studio album "Invaders Must Die", after "Omen" and "Warrior's Dance", as well and the free promotional single "Invaders Must Die".

Acid Tiger (album): Acid Tiger is the self-titled debut studio album by the American rock band Acid Tiger.  The album was released on April 27, 2010 through Deathwish Inc. — a label that was co-founded by Jacob Bannon of Converge.  Acid Tiger is a supergroup composed of Ben Koller (Converge, All Pigs Must Die), Lukas Previn (Thursday, United Nations), Adam Wentworth (Bloodhorse, All Pigs Must Die) and J Rattlesnake.  The album has been compared to 90s math rock and the psychedelic rock band The Doors.

The Prodigy: The Prodigy are an English electronic music group from Braintree, Essex, formed in 1990 by keyboardist and songwriter Liam Howlett.  The first line-up of the band also included Maxim (MC and vocalist), Keith Flint (dancer and vocalist), Leeroy Thornhill (dancer and live keyboardist), and female dancer and vocalist Sharky.  Along with The Chemical Brothers, Fatboy Slim, and other acts, The Prodigy have been credited as pioneers of the big beat genre, which achieved mainstream popularity in the 1990s.  Their style ranges from rave, hardcore techno, electro-industrial, jungle and breakbeat and big beat, adding punk vocal elements in later works.

Invaders Must Die: Invaders Must Die is the fifth studio album by English electronic dance music group The Prodigy.  The album was released on 23 February 2009 on the band's new record label Take Me to the Hospital, and was distributed by Cooking Vinyl.

Tommy Sparks: Thomas "Tommy" Sparks (born 7 February 1986) is a Swedish-born English singer-songwriter from London.  He is known for his songs "She's Got Me Dancing" and "I'm a Rope".  His self-titled album was released on 11 May 2009 in the United Kingdom.  He co-wrote The Prodigy song "Wild West" featured on the bonus disc for "Invaders Must Die".  He also features on the Filthy Dukes album "Nonsense in the Dark" on the song "Messages".

Supporting paragraphs: Invaders Must Die The Prodigy
Answer: Liam Howlett