To realize a rhythm game in which a player can actively play a game repeatedly without feeling tired of.

This game device memorizes a phrase corresponding to the rank of a pattern of hitting a Japanese drum and the number of an inputted measure and discriminate which rank a pattern inputted by a player corresponds to. Phrases corresponding to the discriminated rank and the numbers of inputted measures are orderly selected to generate and display a sentence. For instance, according to a corresponding table 100 showed in the Fig. 5, when a player inputs a musical performance of the rank C into the first measure, a phrase 'my father's' is selected. Next, when a player plays the rank B in the second measure, the rank B in the third measure, the rank A in the fourth measure, and the rank A in the fifth measure in that order, finally a sentence 'My father' s mole floats in the air and I waited and waited this bright stage.' is generated.