The Bells is Rachmaninoff's two favorite compositions along with one that premiered where? 
The Bells (symphony):  It was one of Rachmaninoff's two favorite compositions, along with his "All-Night Vigil", and is considered by some to be his secular choral masterpiece. All-Night Vigil (Rachmaninoff): The All-Night Vigil (Pre-reform Russian: Всенощное бдѣніе, "Vsénoshchnoye bdéniye"; Modern Russian: Всенощное бдение) is an a cappella choral composition by Sergei Rachmaninoff, his Op. 37, premiered on March 23, 1915 in Moscow.
Moscow