I shuffle through the sheet music, avoiding tunes in keys with more than two sharps or flats, until I hit on “Old Shanghai.”

When people live in flats, it is essential that they show some consideration for their neighbours.

The barn that had been set on fire stood on the flats, below the cliff, and fully half a mile away from the Nest.

In the first place, there are in all large towns almost enough empty houses and flats to lodge all the inhabitants of the slums.

But no darter of mine should go out past the flats in one of 'em if I had the say.

A “chromatic scale” is thus a series of semi-tones, and is commonly written with sharps in ascending and flats descending.