Distinguished by their philosophical lyrics, sonic experimentation, extended compositions, and elaborate live shows, they are one of the most commercially successful and influential groups in popular music history. Echoes: The Best of Pink Floyd is the fourth compilation album by the English rock band Pink Floyd, released on 5 November by EMI internationally and a day later by Capitol Records in the United States. It debuted at # 2 on the Billboard 200 album chart on 24 November, with sales of 214, 650 copies. It remained on the chart for 26 weeks. The album was certified Gold, Platinum and.