 Although this particular technique was used only on the two songs selected for the May 1966 single, an enhanced bass sound was a feature of much of the album.Emerick also ensured a greater presence for Starr's bass drum, by inserting an item of clothing inside the structure, to dampen the sound, and then moving the microphone to just 3 inches from the drumhead and compressing the signal through a Fairchild limiter.MacDonald writes that, despite EMI Studios being technically inferior to many recording facilities in the United States, Starr's drumming on the album soon led to studios there "being torn apart and put back together again", as engineers sought to replicate the innovative sounds achieved by the Beatles.