Instrumental Duet Instrumental Duet,Piano,Trumpet - Level 3 - Digital Download SKU: A0.1024066 Composed by Roger Ramirez. Contemporary. Score and parts. 13 pages. Roger Ramirez #516019. Published by Roger Ramirez (A0.1024066). This quick and quirky duet is based around the fun and ambiguous nature of the octatonic scale. It keeps both the listeners and performers engaged with it's ever changing meters and oddly aesthetic dissonance.