a tin bath and a cash till. Although effects were added throughout the track, they were heavily edited for the released recording. The sound of ocean waves enters at the start of the second verse and continues through the first chorus. Harrison created this effect by swirling water around a bathtub. On the third verse, a party atmosphere was evoked through a combination of Jones clinking glasses together and blowing an ocarina, snatches of excited chatter, Boyd's high-pitched shrieks, Bicknell rattling chains, and tumbling coins. To fill the two-bar gap following the line "And the band begins to play", Martin and engineer Geoff Emerick used a recording of a brass band from EMI's tape library. They disguised the piece by splicing up the taped copy and rearranging the melody. The recording includes a sound-effects solo over the non-singing verse, designed to convey the submarine's operation. Lennon blew through a straw into a pan of water to create a bubbling effect. Other sounds imitate the whirring of machinery, a ship's bell, hatches being slammed, chains hitting metal, and finally the submarine submerging. Lennon used the studio's echo chamber to shout out commands and responses such as "Full speed ahead, Mr Boatswain." From a hallway just outside the studio, Starr yelled: "Cut the cable!" Gould describes the section as a "Goonish concerto" consisting of sound effects "drawn from the collective unconscious of a generation of schoolboys raised on films about the War Beneath the Seas". According to Echard, the effects are "an especially rich example of how sound effects can function topically" in psychedelia, since they serve a storytelling role and further the song's "naval and oceanic" narrative and its nostalgic qualities. The latter, he says, is "due to their timbre, recalling radio broadcasts not only as a contemporary experience but also as an emblem of the near-distant past", and he also sees the effects as cinematic in their presentation as "a coherent sonic scenario, one that could be diegetic to an imagined series of filmic events". In the final verse, Lennon echoes Starr's lead vocal, delivering the lines in a manner that musicologist Walter Everett terms "manic". Keen to sound as if he were singing underwater, Lennon tried recording the part with a microphone encased in a condom and, at Emerick's suggestion, submerged inside a bottle filled with water. This proved ineffective, and Lennon instead sang with the microphone plugged into