How Long Will I Love You Sample Lesson Sample In the style of Ellie Goulding. This is a lesson on the piano accompaniment to the song as performed by Ellie Goulding. The lesson starts with a full demonstration of the accompaniment part with backing tracks and vocal cues followed by our famous "by ear" lesson teaching the part in two to four measure sections using no print, music, or video. At the conclusion of the lesson the tracks are given again without the piano part on them for the student to use for their own live performance.