The duet formed by Joanne Castellani and Michel Andriaccio is at the present time considered come one of best the whole of chamber music. Invited to play on scenes as prestigious as Smithsonian, the JFK Center for Performing Art and even the White House (invited by President Bill Clinton), it is also often possible to have the chance to hear them on the scenes from North and South America or European and returned from a triumphal round to China. Their complicity with the American type-setter Roberto Sierra gave rise to two concerti major for guitars and orchestra.