Salonen later took the orchestra on many other tours of the United States , Europe , and Asia , and residencies at the Lucerne Festival in Switzerland , The Proms in London , in Cologne for a festival of Salonen 's own works , and perhaps most notably , in 1996 at the Théâtre du Châtelet in Paris for a Stravinsky festival conducted by Salonen and Pierre Boulez ; it was during this Paris residency that key Philharmonic board members heard the orchestra perform in improved acoustics and were re-invigorated to lead fundraising efforts to complete construction of Walt Disney Concert Hall .
They toured throughout the United States , Europe , and Asia , and performed at the Lucerne Festival in Switzerland , the BBC Proms in London , in Cologne for a festival of Salonen 's own compositions , and in 1996 at the Théâtre du Châtelet in Paris for a Stravinsky festival conducted by Salonen and Pierre Boulez .