In the early 1950s he performed in various professional jazz ensembles and helped organise jam sessions in Prague.

[2] The Jazz Studio often performed Hulan's own short compositions, which had poetic titles connected with the "flow of modern life".

[3] In the late 1960s he still collaborated with TOČR (later renamed the Jazz Orchestra of the Czechoslovak Radio - JOČR) and actively participated in Czech musical life.

He also performed with the American clarinetist Tony Scott, and prepared a TV series, Jazzový herbář (The Jazz Herbarium) with the director M. Peer.

However, the Communist authorities had already confiscated his passport, so Hulan could visit the American embassy in Prague and borrow the materials for these readings and shows "without fear".