Bb C Bb C [Verse 1] Bb C Listen, if you listen you will hear an endless Bb C heartbeat on the inside, through the Bb C walls the sound is crawling down the corridors and halls Bb C it cracks the ceiling, the windows and the doors Bb well the rest won't listen though the walls have ears C but they never really look they just stand and stare Bb C they're all standing staring at the walls [Chorus] Ab Cm who put the writing on the walls? Ab will no-one ever know? F Oh, well I don't mind the walls [Verse 2] Bb C Tell me, why don't you tell me? Bb C have you got nothing to say? Bb C tell me where in hell this place is, tell me why I get no answers Bb C am I talking, taking to the walls? Bb C so it's running, jumping, standing stil,well I think I've had enough of it all Bb C get your hands up, up against the wall [Chorus] Ab Cm who put the writing on the walls? Ab will no-one ever know? F Oh, well I don't mind the walls [Instrumental] Bb Machines that go to factory C Machines that go to factory Bb Machines that go to factory C Machines that go to factory Bb Machines that go to factory C Machines that go to factory Bb Machines that go to factory C Machines that go to factory through the Bb C walls the sound is crawling down the corridors and halls Bb C it cracks the ceiling, the windows and the doors Bb well the rest won't listen though the walls have ears C but they never really look they just stand and stare Bb C they're all standing staring at the walls Bb C they're all standing staring at the walls Bb C they're all standing staring at the walls [Chorus] Ab Cm who put the writing on the walls? Ab will no-one ever know? F Oh, well I don't mind the walls [Chorus] Ab Cm Who put the writing on the wall? Ab who fights and runs away? Cm the minutes and the hours pass him Ab Cm tracing out the days, the days and nights drag into years Ab and no-one ever knows F Oh, well I don't mind the walls