I understand you're looking for a version of the Yamaha PSR-S900 sounds. However, I need to give you an important heads-up before you search further: ⚠️ Important Note The Yamaha PSR-S900 is a commercial arranger workstation. Its internal samples, voices, and styles are copyrighted property of Yamaha Corporation . There is no official Kontakt library released by Yamaha for this model.