Public participation is key to the sonic art projects, which span a variety of genres and include some unique approaches: building facades, metal pipes and footsteps all double as instruments.
But this week the pop trio followed in the footsteps of extreme metal terrorists Napalm Death by soldiering on, despite the fact that, since Keisha Buchanan's departure on Monday, their lineup now has zero original members.
They are following in the footsteps of 90s rap-metal bands like Linkin Park and Limp Bizkit.
Hard rockers Motörhead follow in the footsteps of Metallica, who last year became the first heavy metal band to headline the festival.
The parking meters are decapitated, first one, then another, slowly, in real time, the squeak of the metal filling the soundtrack, the clunk onto the ground, a pause, a few footsteps, then the next meter.
As night fell, we could hear the patter of footsteps in the hallways, yelping dogs in the distance, a monk chanting evening prayers, metal pots being washed, and someone spitting into a communal sink.
For 25 minutes I stared at the gray metal wall, conscious of the mechanical wah- wah ringing out amid the clunking stall doors, shuffling footsteps and flushing toilets.
Metal Maniacs asked Slayer in a 2006 interview whether they would consider playing South of Heaven in the footsteps of the Still Reigning tour, to which Araya replied, "It's becoming a trendy thing now.
Bullets whiz by your ear there's trouble afoot!; the pitter-patter of footsteps compel you to look over your shoulder; sword and shield clash in 300, the unmistakeable ringing of metal cause you to cringe.
Following Nixon's footsteps.
