What is impromptu example

The children put on an impromptu concert for the visitors.Lots of famous people l.The white house construction started in 1792.An impromptu speech, by definition, is the one that a speaker delivers without any prior preparation on the topic.Impromptu speeches can be done in response to any number of unexpected situations.Give an example of your point.

You have probably done impromptu speaking many times in informal, conversational settings.Impromptu speeches are often unprepared and feature a greater degree of spontaneity than other types of public speaking.An impromptu action is one that you do without planning or organizing it in advance.