Undercover is a British pop-rock band that emerged in the late 1970s. Fronted by vocalist and guitarist John Martyn, the band gained popularity with their catchy melodies and soulful vocals. Their signature sound, a blend of pop, rock, and funk, resonated with audiences, and they quickly became known for their energetic live performances. Undercover's most notable hits include "Never Let Her Slip Away," "Check Out The Groove," and their cover of Gerry Rafferty's "Baker Street."