The Mar-Keys were an American soul band, active primarily during the 1960s. They were significant as the original house band for the Stax Records label, and their instrumental recordings laid the groundwork for the "Memphis soul" sound. The group's distinctive horn-driven style, featuring notable members such as Donald "Duck" Dunn and Steve Cropper, can be heard in influential works like "Last Night", their first and biggest hit. Over time, their rhythm section evolved into the renowned Booker T. & the M.G.'s, further cementing the Mar-Keys' influence on popular music.