Robert Keller (1828-1891) was a German music editor. Keller was born on 6 January 1828 in Harpersdorf in Lower Silesia. He moved to Berlin where he became a musical editor for the music publishing company N. Simrock. Keller edited and arranged a substantial number of works by Johannes Brahms and Antonín Dvořák. He died in Berlin on 16 June 1891. Source: Wikipedia (en)