The first verse originally drew from Muhammad Iqbal's poem "Two Planets" but was rewritten to use to better reflect the song's fluid, expansive sound [21].
: The eerie middle segment, often called the "whale song" or "bird section," was produced by Gilmour using a wah-wah pedal plugged in backward to create high-pitched, screaming feedback [11]. 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]. The first verse originally drew from Muhammad Iqbal's
A for guitarists trying to replicate Gilmour's tone. More details on the "2001" synchronization theory. Echoes