The PCO has played various arrangements I've made of works originally written for piano, organ, string quartet, etc. The harmony, rhythm and musical structure of the original is still there, but the music is somehow transformed in the listeners (and performers) ears to something new, and hopefully beautiful. Using Ed's post about Bach's St. John Passion as a diving off point, here are a number of versions of Astor Piazzolla's Libertango - his original version, and some arrangements, especially the one for solo marimba featuring Anne-Julie Caron. Sit back and enjoy!