A magical journey of long ago from bronze to musical instrument, beginning at least 4000 years before Christ, the alloy known as bronze reaches us.  It is made up of 80 parts copper and 20 parts tin, plus the silver which is present as impurity in the tin.  Here is unveiled the “secret” of Bronze B20, the same alloy of bronze that has always been used in the construction of bells.  The alloy is created in a crucible.