Hello. I'm new to this site and wanted to know if anyone could tell me what a capo is? I'm mostly self taught at the guitar and i've downloaded songs off of the internet many times. a few of those times the songs came with instructions calling for the song to be played in some key with capo on a certain fret. So i ask "what is a capo? and what do i need to know about using one?" Oh and one more thing... can anyone explain to me how it works to play in key of G or Bb or Eb etc..etc.. what can a do about changing what a song calls for to a key higher or lower? :confused: