: Frequently cited as the definitive version, this performance in an empty Roman amphitheater showcased the band's peak improvisational chemistry [10, 26, 37].
: The song features harmonized vocals by David Gilmour and Wright, accompanied by a soaring, chromatic guitar riff [10, 13]. Echoes
: Keyboardist Richard Wright created the iconic opening "ping" by playing a single note on a grand piano and feeding it through a Leslie speaker [13, 21]. : Frequently cited as the definitive version, this