Roger Keith "Syd" Barrett was an English singer, guitarist and songwriter who co-founded the rock band Pink Floyd in 1965. Until his departure in 1968, he was Pink Floyd's frontman and primary songwriter, known for his whimsical style of psychedelia and stream-of-consciousness writing. As a guitarist, he was influential for his free-form playing and for employing effects such as dissonance, distortion, echo and feedback.