: 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].
Written primarily by , the lyrics explore themes of human empathy , connection, and the collective subconscious [10, 21]. Echoes
: A popular fan theory suggests "Echoes" was composed to sync perfectly with the "Jupiter and Beyond the Infinite" segment of the film, though the band has never officially confirmed this [33]. : Keyboardist Richard Wright created the iconic opening
