Audio content production studio Audio Up has closed its Series C funding round at what it says is a $150 million pre-money valuation. Audio Up says in a press release that it plans to use the proceeds from the round to “continue amplifying” the music side of its business, with the latest fundraise arriving nine months after it struck a joint venture with Universal Music Publishing Group (UMPG). That agreement with UMG has focused on signing songwriters to create music for Audio Up’s original podcast programs.