Complex sentence: In 1877, the year in which Dvořák wrote the "Symphonic Variations" and Ludevít Procházka conducted its premiere in Prague, the music critic Eduard Hanslick informed him that his music had attracted the attention of the famous Johannes Brahms, whom Dvořák admired greatly.
Split into simpler sentences: In 1877, Dvořák wrote the "Symphonic Variations" and Ludevít Procházka conducted the premiere in Prague. Also, music critic Eduard Hanslick informed him that his music had attracted the attention of the famous Johannes Brahms, whom Dvořák admired greatly.