Whoah... good point, acima ! This may not be an "arranger keyboard" in the sense that we normally mean. It says "Realtime SMF Arranging" in the promo and "Real Time Orchestration" in the picture below the name of the instrument, but no mention of styles. I saw the word "arrange" and assumed this was an auto-accompaniment keyboard, but it's more likely that this keyboard is meant to playback midi files while the keyboardist plays over top of them and sings. The "cover" feature seems to be a track/scene-change feature that would allow you to switch the instrumentation of a file on the fly. Mucho mention of lyrics display also... yes, it's a karaoke keyboard. Damn 64-note poly again. Hmmmm...