Liedewij Hentenaar, graduated in economics and communication sciences, is since 2013 director of RAB Netherlands, the marketing body for radio/audio, funded by all the Dutch radio stations (public and commercial, national and regional stations). RAB helps advertisers and their agencies to optimise the value and impact in use of radio to reach and engage listeners. Next to that RAB is member of the board of RAM,  the Joint Industry Committee of the national radio audience measurement research. Before deep diving in audio and radio, Liedewij used to work for almost 18 years for different media agencies (Mindshare, Isobar, Vizeum, Carat) as MD or Client Leader. And was a board member for the Dutch branche organisation of media agencies, PMA.