Imutus - an Effective Practicing Environment for Music Tuition. - Spyros Raptis; Aimilios Chalamandaris; Alexandros Baxevanis; Anders Askenfelt; Erwin Schoonderwaldt; Kjetil Falkenberg Hansen; Dominique Fober; Stéphane Letz; Yann Orlarey (ICMC, 2005)