A 23-minute epic by psychadelic act Pink Floyd. It's featured on their 1971 album Meddle and is considered by fans the point in which they found the sound they were best known for in albums like The Dark Side of the Moon and Wish You Were Here. It takes up the entire b-side of the album. Also the title of their greatest hits album Echoes: The Best of Pink Floyd (The song is featured on that compilation but is shortened to only thirteen minutes).
You haven't heard Pink Floyd until you've heard Echoes.
An incredibly epic song by Pink Floyd. It varies from thirteen minutes (the Best of cd) to around 27 minutes (the live David Gilmour version). From the opening solo, where the guitar is just lovely, to David and Richard Wright (R.I.P.) (or whatever various live keyboardist) trading solos, to the strangely beautiful echo noises in the middle, and then the incredible bass swell, all the way to the end, where the guitar sounds like drops of golden fire from heaven, this is, musically, a stunning vista with much variance. Roger Water's beautiful lyrics are just bloody incredible.
Person 1: Hey man, what's up?
Person 2: Shh, I'm listening to Echoes.