Sonic Pass (2009) is a 14'48'' bootleg recording made in May 2000 of the exhibition "Sonic Boom: The Art of Sound" which was curated by David Toop at the Hayward Gallery in London. Installed on two speakers in front of a window on the staircase, we pass through the 'pass'. A poster with the liner notes is mounted next to the window on the wall. The size of the poster and its position mirror exactly the exhibition poster hanging on the same wall half a floor down next to the entrance of the show, underscoring that Pierce's work presents -the soundtrack of- an exhibition in an exhibition. Like Mike Carremans' work (see above), the two poster setup refers to the remainder of another exhibition: Two identical and synchronized clocks, Félix Gonzàlez-Torres's Untitled (Perfect Lovers) (1991), have been left after an exhibition in 2008 and are since then hanging above the bathroom door on the first floor.

"'The fourth dimension?! Einstein? Or mysticism? Or a joke? It’s time to stop being frightened of this new knowledge of a fourth dimension.'
Sergei Eisenstein, Film Form, 1929

Sergei Eisenstein’s concept of a filmic fourth dimension, describes “overtonal conflicts, foreseen but unwritten in the score...” In a sonic pass, I move, sounds overlap, I move, I pass, through parents and children, through voices and footsteps, up concrete stairs, through rustling gravel darkened space, rotating neon and vinyl blinks at funny abstract photo sensitive walls. I see, I hear, I move through a fourth dimension. Concrete stares. Outside again, into the open air, through a man whistling as he passes through me passing through his whistle."
(Excerpt from the liner notes)