Tango Traicionero, by Kirt Mosier, means "treacherous tango." The tango is a Latin dance that first developed in Buenos Aires, Argentina, in the mid-19th century. Imagine a gathering of bohemian nomads and workers having a dance party in the streets. There is a natural tension in this tango which mirrors the intoxicating nighttime atmosphere. All orchestra sections work together to perform slides and shifts between notes of the melodic figures to add intrigue to the sound. A lively middle section builds to a key change and recapitulation. The work culminates with tense chords to an exciting finish. (3:40)