The sounds of the trumpet player and the laughing woman who keep the man awake through the night are taken directly from the novelty OKeh Laughing Record, which was released in 1923.
Tex Avery's last theatrical cartoon.
The trumpeter is attempting to play a song titled "Mis-spent Youth" throughout the laughing sequence.
The neighbor's room constantly changes back and forth from next door to across the hall.
Towards the end, in a moment of complete exasperation, Mr. Twiddle utters "D'oh!" This anticipated Homer Simpson's use of the phrase in The Simpsons (1989) by 34 years.