The singers shown in close-up in Mr. Gates’s video “Breathing” (2010) flow from Japanese mantras into African-American spirituals. All are members of Mr. Gates’s Buddhist/gospel chorus, the Black Monks of Mississippi, which he has been directing since 2008. Their cross-cultural chants fill the galleries, adding to, rather than distracting from, the other works. Performance also figures in the sculptures of Mr. Laib, which combine Minimalist forms with Buddhist rituals. “Rice Meals,” for instance, involves a row of brass plates holding small mountains of uncooked rice and hazelnut pollen.