I'm 56 years old and have been playing since I was 16 and for the life of me I've never understood why proficient players would need to use a capo. I mean can't you just play the chord/note at the desired higher position for the desired sound? I've never used one so I guess I'm ignorant regarding its true purpose. I used to hear it called a cheater bar. Can someone please enlighten me? Best to all.