The Sensations were an American doo-wop group from Philadelphia, Pennsylvania. The group formed in 1954 under the name the Cavaliers, soon after changing to the Sensations. The group scored two hits on the US R&B chart in 1956 with the Atco Records singles "Yes Sir That's My Baby" (No. 15) and "Please Mr. Disc Jockey" (No. 13). By 1957 they were managed by Kae Williams. The group disbanded soon afterwards, and lead singer Yvonne Mills married and started a family.... [more on Wikipedia]