Alban Berg
Berg was very grateful to Schoenberg for all that he had learned from him, but he still continued to be quite afraid of him. Schoenberg wrote many letters to him asking him to do things for him (e.g. making piano arrangements of his orchestral pieces) and often criticising him. Only in the 1920s, when Berg had become well-known, did Schoenberg start writing to him more like an equal friend.