The AI startup reports rapid growth, strong retention rates and rising engagement. Courtesy Photo Trending on Billboard On Wednesday, Suno CEO and co-founder Mikey Shulman posted about two new milestones for his AI music company on X: 2 million paid subscribers and $300 million annual recurring revenue (ARR). This is double the subscriber count Billboard reported in November. According to Suno’s investor pitch deck, obtained by Billboard, Suno noted 1 million subscribers, up 300% year over year....