Pink Floyd...welcome to the machine.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjzrLmExs3pAhXMB80KHVFrABEQ3ywwAHoECBgQBg&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dlt-udg9zQSE&usg=AOvVaw1CZz194aW9Xs3Oqf-Wcmfx