Inspired by his life-long interest in chant and choral music, Paul Mealor's De Profundis pushes the boundaries of the human voice in a style synonymous with Russian orthodox music. In spring 2012 this piece sparked the 'Bass Hunter' competition - a world-wide talent search for the lowest human voice in existence. The note, an 'E' (329 Hertz), is six notes below the lowest note ever written for a choral piece (from Rachmanivov's Vespers - a B flat), and a whole tone lower than the Guinness World Record-holder - a sung F sharp. The piece has since been recorded featuring the winner of the competition, Tim Storms (Decca 3709935).