Piano,Voice Duet Piano,Voice - Level 3 - Digital Download SKU: A0.741871 Composed by Wolfgang Amadeus Mozart. Arranged by John Ross. Classical,Concert,Sacred. 7 pages. John Ross #5996933. Published by John Ross (A0.741871). Mozart's Laudate Dominum K 339 was originally scored for solo soprano, SATB choir, and orchestra. It is often performed by a solo soprano with keyboard accompaniment, the choral section of the movement being omitted. The present arrangement is for two evenly-matched sopranos with piano accompaniment. The solo focus is shared by both singers and the music of the original choral section is incorporated in the arrangement. Editorial suggestions for dynamics are in brackets.