(Credit: Karen Almond / Metropolitan Opera) One hundred and nineteen artists and conductors are signing a petition to end the war and end the boycott against boycotting Russian artists. The petition, which is signed by such prominent artists as Antonio Pappano, Mark Elder, Simon Rattle, Franz Welser-Möst, Cornelius Meister, Dmitri Tcherniakov, Barrie Kosky, Matthew Rose, Fabio Luisi, Barbara Hannigan, and {…}