VIOLIN & VIOLA -Humberto Lopez - 1st violin -Carlos Arias - 2nd violin -Pablo Hopenhayn - Viola from Julieta Venegas acoustic Band (MX) Reinhardt Zipflo (Germany) chi2 (UK) Radha Krishna / Ravi Shankar band (India) Lockwood Didier (France) Dervish Group (Ireland) Glaser Matt (USA) Gustorff Michael (Germany) Haller Felix (Switzerland) Primasch Christophe Gawrysiak (Switzerland) Kagermann Thomas (Germany) Piculeata Carmen / Cirque du Soleil Spicher Buddy (USA) Daniel Willem (Belgique) Bernie Mallinger (Austria) Madmax Fiddler (Austria) Gerard Kilbride (UK)