I just 'opped about Saigong like a--jackdaw, picking up these impromptus.
There are four Impromptus and four Ballades, also four Scherzos.
How often have I hover'd at the edge of a crowd of them, to hear their repartees and impromptus!
For completeness and height, and for sudden surprise, this speech exceeds all impromptus on record.
Another remarkable question which I feel ...