The Sensations were an influential American doo-wop and R&B group from Philadelphia, active during the 1950s and 1960s. The group, with notable members Yvonne Mills and Tommy Wicks, had a distinctive sound characterized by harmony-rich vocal arrangements and soulful melodies. They are best known for their hit songs "Let Me In" and "Please Mr. Disc Jockey," which significantly contributed to the evolution of R&B music. The Sensations' fusion of doo-wop and R&B styles laid the groundwork for the subsequent development of soul music.