The track 's music was composed by James Frost and Robin Hawkins, with the original incarnation featuring a different chorus, both musically and lyrically. However the band decided first to change the music before deciding to rewrite the chorus 's lyrics. The chorus was planned to have a fairytale-esque theme to it, with keyboardist and vocalist Alex Pennie penning the idea which would become the track 's famous lyric "What 's that coming over the hill? Is it a monster? Is it a monster? ''. Originally however, the lyric was used just to fill the chorus until a more suitable lyric was found, but over time the lyric stuck and so was eventually used when the band recorded a demo of it in 2005.
who sings whats that coming over the hill
Alex Pennie