On his first solo album in 23 years, the Stones legend returns to the classics—folk-blues, soul, rock ‘n’ roll, and reggae—carving handsome riffs from the styles that inspired him to pick up a guitar. It’s a relaxed, T-shirt and jeans affair. Keith plays with freedom and feeling, while singing with gruff authenticity. Norah Jones pops by for a duet on “Illusion”—their vocal interplay must be heard. Covers of Lead Belly (“Goodnight Irene”) and Gregory Isaacs (“Love Is Overdue”) extend the appreciative arm of thanks, revealing a deep respect and admiration that can be felt beyond the last strum.