Comment: He had played the piano solo "Storm in the sea", which was final program in the piano concert performed at the Royal Theater of Copenhagen on January 23, 1811. In that program, "Storm in the sea" was written as following. 1:Calm sea, 2:Close storm, 3:Fury of storm, 4:Sky's brightness after storm leaving, 5: Song of fishermen's joy, and a variation, which brings them to conclusion. This is registered as DF.Nr.204, there is no score remained. It is Kuhlau's only program music and may have been played ad-lib.