: Use a utility like WinRAR or 7-Zip on your PC to unzip the file. You will typically find one or more .STY files inside.
It listens to the chords you play in the left hand and adjusts the backing band in real-time. STYLE YAMAHA PSR S 900 1.rar
I can help point you toward the right resources or communities to find exactly what you are looking for. : Use a utility like WinRAR or 7-Zip
Copy the extracted .sty files onto a USB flash drive formatted to FAT32. Load into PSR-S900: Insert the USB drive into your keyboard. STYLE YAMAHA PSR S 900 1.rar