Watch the Capoed Baroque Piece: Key of C#m online guitar lesson by Vicki Genfan from Acoustic Rhythm Guitar Cookbook
Listen to the basic version of this progression. In the first study, we'll pick out a melody and work with pull-offs. In the second study, we'll add a trill and some additional melody notes. The use of the capo in this study shows us how the sound and effect of the guitar is changed by changing key. I often use the capo in this way because I prefer to use certain chord shapes because they allow me to do certain embellishments and they feature certain voicings, but I may find the higher key and the way the guitar sounds in this key to be more pleasing. This applies to instrumental pieces – but of course you may also choose a certain key because it works best for the vocal if it's a singing song.