Compound triple meter is equivalent to simple duple meter with triplets on every beat. Throughout the piece, Ravel creates ambiguity between triple and duple rhythms. Trot is known for being composed in a two-beat rhythm, also known as duple metre. It combines duple and triple meter. The illusion of simultaneous and , suggests polymeter&colon; triple meter combined with compound duple meter. Gnawa is particularly characterized by interplay between triple and duple meters. He scored it in duple meter rather than its standard triple meter. The duple beats are primary and the triple beats are secondary. Music in duple time was similarly called "tempus imperfectum". These two different styles switch off until the conclusion of the piece (in duple meter). Shown below are a simple and a compound duple drum pattern. This included the jigs for the Duple 320 and the Duple 425 integral. Thus ended 70 years of Duple Motor Bodies Limited. Disputes among union labour resulted in a 36-week strike that was catastrophic for Duple. The contrasting trio section is in D major and in duple time.