The departure is surprising not only because Williams is leaving so soon but also because the company had raised $16 million in a first round of funding a few months ago, which it said it would use in part to launch its service in the U.S. A French version of Goom—which features a mix of music, along with shows and interviews—launched last fall.

SEE ALSO: Goom Radio Raises $16M First Round For Broadcast Service

In a statement, Williams says, “As Goom Radio moves into its beta stage, our stations already reach 1 million listeners and advertiser response has been great; however, for my own reasons, I have decided that this is a good time to explore new opportunities. I have been working closely with our founders to assure a smooth transition for our employees and partners and I wish the Goom team continued success.”

Goom is ad-supported and announced last week in a release that mentioned WIlliams that internet radio advertising network TargetSpot would now be its “exclusive advertising channel.”