Style files are small MIDI files, but they can be bundled in .zip or .rar archives from unknown sources. Always:
Yamaha PSR keyboards use "style" files to provide backing tracks (drums, bass, chords, fills) that accompany live playing. This guide covers what PSR style files are, compatibility, safe sources for free downloads, how to install them, and tips for use.
Yamaha PSR keyboard, the most helpful "feature" is the ability to expand your built-in rhythm library using custom (.STY) downloaded from various specialized community and official sources . These files act as virtual backup bands that respond to the chords you play in real time. Top Sources for Free Yamaha PSR Style Files