Watch the Exercise 4 online guitar lesson by Muriel Anderson from Fingerstyle Essentials
Not all tunes stay right in the D position. In Danny Boy, when the melody goes up higher, it may be nice just to play the single notes. You can also fill in with 6ths or 3rds, as you like. This is a fun one to try on your own. Afterward, for comparison and to incorporate more ideas into your own arrangment, there is a full version at the end of this course.