In the mercy of overthrow Damn it noise cancelling wall foam Alleviation Toll Incredible
What are some alternatives to acoustic foam that would be cheaper but still effective at reducing noise in a small apartment (e.g., with thin walls)? - Quora
Focusound 50 Packs Acoustic Foam Panels Wedge Soundproof Studio Wall Tiles Sound Absorbing with Double Side Adhesive Tape, 30 X 30 X 2.5 CM : Amazon.co.uk: Musical Instruments & DJ