This Danish duo are not only for marimba but also all ground percussion. Uffe Savery and Morten Friis, they can perform Marimba Spritual just by themselves...2 people! It is called Marimaba Spritual 2 and recorded on their CD. Mostly they transcribe piano music by Bach, Chopin or Ravel for 2 marimbas. Safri version of Alborada del gracioso by Ravel is published from Studio 4 Production, and available their CDs in stores in Japan.