Mr Lokai, trying to impress Janice Baird with what he knows about her, refers to "Mussorgsky's 'Pictures at an Exhibition' in G major". 'Pictures . . .' is a collection of separate descriptive pieces representing paintings in a museum. Music like this is almost never referred to by the key it begins in, as are Symphonies and Concerti. In fact, Mussorgsky's piece begins in B-flat major, and none of the separate pieces is in G major.