The movement “Reverie—Crystal Lattice” closes a piece for this type of ensemble by Augusta Read Thomas titled Resounding Earth. Dawn Upshaw and Gilbert Kalish collaborated with this type of ensemble for a piece that adapts hymns from The Sacred Harp about the River Jordan. That ensemble of this type, which collaborated with Caroline Shaw (-5[1])on the Grammy-winning (-5[1])2021 (-5[1])album Narrow Sea, is named Sō (10[1])(“soh”). Carlos (10[1])Chávez called for a six-person ensemble (-5[1])of this type in his Toccata. Six sets of microtonal scales can be produced by an instrument called a “sixxen” (“SIX-zen”), which was invented for one of these ensembles (10[1])by Iannis (10[1])Xenakis (“zeh-NAH-kiss”) for his piece (10[1])Pléïades (10[1])(“play-YAHD”). 40 different instruments are played (10[1])by a 13-member (10[3])ensemble of this type in Edgard Varèse’s (10[1])(“vah-REZZ’s”) Ionisation. (10[1])For 10 points, name this kind of ensemble that may include bells and xylophones. (10[2])■END■ (10[6])