1. no ep piano. 2. your ear is off. becuz ther is nothing that sounds remotely off. 3. nigga i know wat notes to press lol. every note i hit was in scale which means in key. 4. if your talking about in the video yea because i had to edit out alot of parts and there was a part where is aid i turned the bass hella up so it conflicts wit everything but i do that to hear exactly wat im playing.