Conversation so far:
Who was an opponent of Richard Wagner
Eduard Hanslick
any one else an opponent of Richard Wagner besides Hanslick
Charles-Valentin Alkan
who supported Richard Wagner?
Wagner's followers (known as Wagnerians or Wagnerites) have formed many societies dedicated to Wagner's life and work

Question: was brahms one of his competitors
Self-contained rewrite: was brahms one of wagner's competitors