Information on Red Haired Boy courtesy of The Traditional Tune Archive.
As appears in this YouTube video.
Red Haired Boy is a jam standard. It is undeniably a flatpicking tune you must know and a really straight tune to get going with if you’re a beginner. This version of the melody is classic and to the point. There’s no licks or other frivolous additions, this is as bare bones as you can get. I’ve said it in videos before but you have to learn the simple melody before you can decorate it.
(Beginning guitar tabs include a clear simple version of the melody as well as chord markings above. My tabs at this level are intended to be affordable, to the point, and no nonsense. Perfect for the beginner that wants a straightforward version of a classic melody or the intermediate to advanced player that wants to learn a melody but embellish it themselves. Some fiddle tunes are difficult enough that a beginning or even intermediate version is unavailable.)