If you own a guitar, you likely have a capo — or you will soon be buying one. I’m not big on capos in performance — even though I have several — because I think using them on a song is a bit of a cheat. Use a barre chord instead of a capo. That makes you the master of the fretboard and not a device. That said, Bob Dylan and Albert Collins are big capo users and they both have certainly had incredible, glorious, careers in music. The most popular capo is made by Kyser. It has an elegant, looping, design, and one of its best qualities is that you can use one hand to take it on and off your guitar.