The Ramsey Lewis Trio was a prominent American jazz band active from 1956 to 2018. Led by pianist Ramsey Lewis, the ensemble was renowned for their rhythmic, soulful approach to jazz, often incorporating elements of blues, gospel, and funk. The trio achieved substantial commercial success with their lively rendition of "The 'In' Crowd" in 1965. Their fusion of jazz with popular music significantly contributed to the genre's mainstream appeal during the mid-20th century.