Very appreciated by critics, Michael Alfonsi collaborated with P. Domingo, D. Gatti, G. Gelmetti, C. Dutoit, D. Rustioni, P. Olmi, A. Colombini, J. Lopez-Cobos, S. Rabaglia F. Zeffirelli, P. Pizzi, D. Livermore, R. Carsen, S. Coppola, L. Pelly, V. Hewitt, E. Stinchelli.