Such species are occasionally referred to as piano stool compounds, at least when there are three diatomic ligands in addition to the hydrocarbon seat of the piano stool.
Their press-release lists his pills, towels, excessive garments, sensitivity to drafts, collapsible piano stool, diet of arrowroot biscuits and habit of swaying and humming at the keyboard.
Tom then plays a chord where the mouse is standing repeatedly, receiving increasingly rude gestures in return, and eventually catches the mouse and stows him into the piano stool.