some of them were : symphonic orchestra of berlin philharmonic orchestra of venezuela symphonic orchestra of paris strings orchestra of torino 's philharmonic wind band of the bayreuth 's youth international festival national chamber orchestra of uruguay orchestra of the anacrusa festival of santiago de chile symphonic orchestra of tucumán in addition , many solo artists have performed his compositions , such as : eduardo fernández ( guitar ) , götz bernau ( violin ) , vihn pham ( violin ) , nicholas ktichen ( violin ) , daniel luzko and josé luis miranda ( piano ) , mami sakuda fiorentini ( soprano ) , antonio dourthe ( bass ) , eladio pérez gonzález ( baritone ) .