[1] There he met Josef Suk, Oskar Nedbal, and Otto Berger – his future colleagues and collaborators from the Bohemian Quartet.
[2] In 1934, after the death of violist Jiří Herold, Hoffmann founded the Bohemian Trio with Ladislav Zelenka and Jan Heřman.
[2] Hoffmann began to assert himself also as a soloist at the end of the 19th century, in addition to his chamber music activities.
He played the solo violin part in the first Prague performance of the Double Concerto in A minor by Johannes Brahms.
In the "Spolek pro moderní hudbu" (Society for Modern Music) Hoffmann collaborated with renowned Czech and foreign artists – Ilona Štěpánová-Kurzová, Rudolf Karel, Jaroslav Křička, Josef Bohuslav Förster, Ladislav Vycpálek, Jan Kunc, Arthur Honegger, Maurice Ravel, Ottorino Respighi and Paul Hindemith among others.