Perfect Sample  Lesson Sample in the style of The Piano Guys. In this Piano By Ear lesson you will learn The Piano Guys arrangement of the Ed Sheeran hit, "Perfect," completely "by ear." The lesson starts with a full demonstration of the song followed by a detailed "note-by-note" description of each measure of the arrangement including the fingering. Learning by ear is fast and easy and it develops your ability to pick out other songs "by ear."