As "A Day in the Life" ends, a 15-kilohertz high-frequency tone is heard; it was added at Lennon's suggestion with the intention that it would annoy dogs. This is followed by the sounds of backwards laughter and random gibberish that were pressed into the record's concentric run-out groove, which loops back into itself endlessly on any record player not equipped with an automatic needle return. Lennon can be heard saying, "Been so high", followed by McCartney's response: "Never could be any other way."