Mr. Wonderful is the second studio album by British blues rock band Fleetwood Mac, originally released on 23 August 1968. This all-blues album was broadly similar to their debut album, albeit with some changes to personnel and recording method. The album was recorded live in the studio with miked amplifiers and PA system, rather than plugged into the board. A horn section was introduced; and Christine Perfect of Chicken Shack was featured on keyboards.