Do I know a plumber? I need confirmation that I am / am not being haunted by a tribal drumming band and a sad dog that I am more and more convinced live in my loft and break into ritual celebration with no obvious pattern. Another suggestion has been that my pipes have air in them and the drumming and whining is water hammer (cue hammer time). The last plumber was useless. I may go insane. I have already shouted "can we be friends" at the loft hatch numerous times to no avail. Plumber, anyone? please? x