Valcourt and Attis are touring the United States as part of Lakou Mizik, an accomplished roots-revival collective that traces its origins in part to that moment. The nine-member band [...] released its debut album, Wa Di Yo, on the U.S. global-music label Cumbancha — and on May 6 the band plays Brooklyn's BRIC House as a highlight of Selebrasyon, a two-month arts biennial in New York that kicked off its second edition last weekend.