Mavis Staples led a rousing rendition of the Band’s “The Weight” on Thursday night with help from Elvis Costello , Hozier , and Warren Haynes at the Love Rocks NYC benefit concert . Each singer took turns at a verse, beginning with Haynes, then Staples and Hozier before Costello took Rick Danko’s “Crazy Chester” verse. The performance led to Staples’ rousing “Yeah, yeah, yeah,” at the end, one that left Hozier’s jaw dropped in awe. The song was one of many highlights in a night filled with star-