I have heard Dmitri Hvorovstovsky sing songs written by Tchaikovsky in recital. Tcaikovsky's personal favorite was "Souvenier of Florence" which is a chamber work and is quite beautiful. He also wrote several operas of which I have seen "Queen Of Spades" by The Dallas Opera and listened to "Eugen Onegin" by the Met. While not all of his music was great, his best works hold their own with any composer. He may have written the finest melodies of all. He wrote many works which are not performed often but many of these are excellent.