"Thank you for making this miracle happen! I do really appreciate how quickly you were able to get this done (CBS-show EVIL)."

- Liz Glotzer |  President King Size Productions, LA 

"Very shortly after I met with Isabella Hirt in Vienna, she called and asked me to consider an offer to work with Robert and Michelle King on a new project they planned to launch in the Fall of 2019 with CBS. Isabella is a remarkably intelligent and persistent young agent (always a good sign) as well as extremely focused on good projects for her clients, whom she is very keen to help and guide through the sometimes baffling labyrinth the entertainment industry can often seem to writers. We communicated in a friendly way which soon led to an agreement for me to work on seven episodes of the project. I signed the agreement quite literally on the evening before taking a plane to New York to join the writers' room on EVIL,  which CBS is now broadcasting in the USA. I look forward to working in the same spirit of mutual support which the Hirt Agency has become for me and, I have no doubt, for all their clients."

- Benedict Fitzgerald | American Screenwriter & Producer, Marsala 

 "You're phantastic, Isabella!" - "Isabella is able to open every door to decision makers (about his collaboration with HirtAgency when he met Irene Dische in NYC before signing her contract)."

- Chris Silber | iEmmy-Award Winner, LA

"Isabella took over my messy backlist of novels,  made intelligent decisions about which to market,  and proved  enthusiastic, tireless,  smart,  and also completely trustworthy.  On a personal level, her trustworthiness is a trait  I particularly cherish in her --  she is  very kind, thoughtful and caring."

- Irene Dische | Multiple Bestselling Author, Berlin & NY

"It is wonderful to work with a young agent who represents me as a talent on both the musical and film sides on the international market. Since Vienna is an especially great city for music, I would like to build up my second pillar here. I have already had a fine career as a conductor which includes performances in Vienna, and am currently working on a crime series project which takes place at the Vienna State Opera. I am thrilled that both as an author and as a musical consultant, in collaboration with my agent, who is also a trained script consultant, I am able to apply all my experience from the  music world - working with conductors like Leonard Bernstein and Zubin Mehta, singers like Dmitri Hvorostovsky and Jonas Kaufmann, being the principal conductor of the Phoenix Opera, a forty year marriage to mezzo-soprano Gail Dubinbaum who sang both at the Metropolitan Opera and the Vienna State Opera, and as a coach and accompanist of future opera stars - for an international series project. I am therefore very pleased that Isabella is here for me from her office (Opera Center opposite the Vienna State Opera) marketing all contacts to decision-makers from the film and opera world for me to maintain, so that we can realize new promising projects together."

- John Massaro |  Award-winning American Conductor, Composer & Writer, Phoenix 

"Isabella is a marketing and sales professional. Fast, effective and results-oriented. Isabella is an efficient, hard-working agent with a lot of energy and persistence. I admire her dilligence and her great attitude towards her clients. 

- Ernst Gossner | Multiple Award-Winning Writer-Director, Vienna & LA