Rick Estrin & the Nightcats are an American electric blues band formed in 2008. The group was established by ex-members of Little Charlie & the Nightcats. Members include Rick Estrin on vocals and harmonica, guitarist Kid Andersen, bassist Lorenzo Farrell and drummer Derrick "D'Mar" Martin. Blues Revue magazine said, "The ‘Cats are one of modern blues’ most versatile bands." Living Blues said, "Estrin's harp work is masterful" and their music is "intelligently conceived and executed and hugely entertaining."