Echoes: The Best of Pink FloydAmazon. com Echoes is a double CD collection of some of Pink Floyd's best songs. It's also a fascinating document of the band's history. They began life as Syd Barrett's phantasmagoric plaything before clasping the wings of Icarus and ascending toward the sun on an epic space rock odyssey, eventually turning left once they reached the dark side of the moon and burning up on reentry, crash landing on every earthlings' home hi fi. And it's all here 30