Bruckner was a renowned organist in his day, impressing audiences in France in 1869, and the United Kingdom in 1871, giving six recitals on a new Henry Willis organ at Royal Albert Hall in London and five more at the Crystal Palace. Though he wrote no major works for the organ, his improvisation sessions sometimes yielded ideas for the symphonies. He taught organ performance at the Conservatory; among his students were Hans Rott and Franz Schmidt. Gustav Mahler, who called Bruckner his "forerunner", attended the conservatory at this time.