Artists in my Dutch playlist of various genres - Gorki, Eefje de Visser, Maaike, Maaike Ouboter, Rikki Lucas Sjoerd & Edwin, Glennis Grace, Opgezwolle, Miss Montreal (most of her recordings are in English, but there are a few Dutch)
If you have an iOS device a few apps to try - NPO Radio 1 (you can access all NPO stations via one app), 3voor12 Luisterpaal, 538 (mostly English music)
If you like singer/songwriters you can watch videos from the show "De beste singer songwriter van Nederland" at
http://www.debestesingersongwriter.nl/
Sorry to post this twice, I accidentally commented to Agnes answer and don't see a way to delete that. I decided to repost the info as an answer so it will hopefully be easier to read.