Later, he went to Berlin and studied with Joseph Joachim (violin) and Friedrich Kiel (composition) at the Royal Music Academy.
He established his reputation as a violinist in Germany by organizing chamber music evenings at the Singakademie in Berlin with Dr. Hans Bischoft, Hermann Jacobowsky, Xaver Scharwenka, and Heinrich Grünfeld, and making frequent concert tours throughout the country.
[1] After a major concert tour, which Hollaender undertook with Carlotta Patti, Theodore Ritter and Felix Mottl through Austria, he went to Cologne in 1881 to serve as concertmaster of the Gürzenich Orchestra and a violin teacher at the local conservatory.
In Cologne, he organized a string quartet with Emil Baré (second violin), Joseph Schwartz (viola) and Friedrich Grützmacher Jr. (cello), touring Germany, Belgium, England, Italy and Denmark.
Hollaender's students include Hans Bassermann, Max Donner, Fritz Cassirer, Paul Elgers, and Else Streit.