The Beatles - octopus's garden, 1969

"The idea for the song came about when Starr was on a boat belonging to comedian Peter Sellers in Sardinia in 1968. He ordered fish and chips for lunch, but instead of fish he got squid (it was the first time he had eaten squid, and he said, "It was OK. A bit rubbery. Tasted like chicken.") The boat's captain then told Starr about how octopuses travel along the sea bed picking up stones and shiny objects with which to build gardens. Starr's songwriting was further inspired by his desire to escape mounting hostility among the Beatles; he would later admit that he had "just wanted to be under the sea, too". Uncredited assistance in developing the song's chord changes was provided by Harrison, who can be seen helping Starr work the song out on piano, with Lennon later joining in with drums, in the documentaries Let It Be (1970) and The Beatles: Get Back (2021), both using the same footage."