1925-1991 1925-2008 1925-2016 1930-2002 artisticcollaboration boulez catalogs conductors(music) correspondence correspondencesacher correspondencetinguely criticismandinterpretationtinguely exhibitions franz jean kineticsculpture letterwritinginart machineryinart mechanicalmusicalinstruments meyer museumjeantinguelybasel nikide paul pierre rauschenberg robert saint-phalle sculptors soundinart swiss switzerland