sandstone which graduates into gneiss; carnelian sometimes graduates into quartz

It used to be a funny comic, but lately it has gone off the deep end.

beneath those banks where rivers now stream

Can you really turn a few keyboards outside London's landmarks into the equivalent of a pub honky-tonk for a good old knees-up; a 50s living room where the family would gather around the piano every evening, in some prelapsarian vision of the olden days […]?