Still facing copyright lawsuits, AI music generator Suno raises another $400M

When Sony and UMG initially sued Suno in 2024, the companies claimed that Suno had trained on 560 of their copyrighted works. That number has since grown meaningfully. Last month, the record labels filed to amend their complaint to allege that over 61,000 more songs were used for AI training without permission.

None of that appears to be slowing Suno’s growth. It continues to hover around the top of the App Store charts for music, and at the time it was raising its Series C round, users were generating over 7 million songs on Suno every day, according to a pitch deck obtained by Billboard.

The Series D round was led by Bond Capital, alongside IVP, Forerunner, Union Square Ventures, Alkeon, and Quiet. Existing investors Matrix, Lightspeed, Menlo Ventures, and Schroders Capital also contributed. Suno says that it is “thrilled to have participation from some of the best artists, producers, songwriters, and people from across the music industry,” without disclosing any names.

The omission is notable; named artist endorsements would go a long way toward defusing the narrative that the music industry is uniformly opposed to what Suno is building.