Sheryl Crow played four musical roles for her cover of Tom Petty's "You Don't Know How It Feels" on Wednesday's Tonight Show. Performing remotely outdoors in front of a corrugated metal woodshed, she began singing the lead vocal and playing acoustic guitar and harmonica, then joined herself at various times on keyboards, backing vocals, tambourine and electric lead guitar. The segment was to promote the Petty box set Wildflowers and All the Rest.