1.3 - Casio CTK-4400/WK-240 Tutorial - Lesson Function - YouTube
Casio Music - You get a free Rockschool digital music book to download with the purchase of these Casio products CTK-3500, CTK-4400, CTK-6200, CTK-7200, WK-7600K5, CDP-130BK, CDP-230 and PX-160! | Facebook