It’s probably fair to say that you’ve never heard anything like the Ground/Terre Duo, unless you’re lucky enough to have access to a magical world where the complex rhythms of the Indian tabla meet the tinkling sonorities of the toy piano.

Those, along with the more familiar concert grand and the mildly exotic harmonium, are the province of keyboardist Xenia Pestova and percussionist Shawn Mativetsky, who’ll close the Western Front’s 88 Tuned Bongos piano series on Friday (April 1). And if the instrumentation isn’t compelling enough, consider this: the program includes works inspired by Syrian textiles (Monica Pearce’s brand-new damask) and Judas Priest’s duelling guitarists K.K. Downing and Glenn Tipton (the irrepressible Nicole Lizée’s Metal Jacket).

Did we say you’ve never heard anything like this? Neither have we.