Selected Duets for Flute, Page 69 Number 2, Waltz, performed by David Summer. A waltz is a ballroom dance in triple meter (usually 3/4 time). Couples dance close together, with the man's right hand on the woman's back or around her waist. The tempo marking for this duet, "Allegro vivace", indicates a tempo that's faster than an Allegro. This fast tempo is commonly found in waltzes originating in Vienna. Austrian composer, Johann Nepomuk Hummel, was also a virtuoso pianist. His style of writing bridges the classical and romantic musical periods, with most of his pieces being, naturally enough, for piano. He wrote several pieces for multiple pianos, also operas, masses and more. Hummel's Trumpet Concerto in Eb, is part of the standard performance literature for trumpet. It's a very melodic piece, well worth searching out. The metronome setting for this performance is half note = 144.