The pure dance is called a "nritta", while the expressive dance is called a "nritya". A Kathak performance can be solo, duo or team. In a technical performance, the speed and energy the dancers exchange with the audience increases in multiples, that is the tempo doubles or quadruples. During the performance, one or more of the Kathak artists may come to the microphone, interact with the audience, explain something, tell an anecdote in a particular language, or rhythmically recite a song.