it's an object you place on the neck of the guitar which acts as another nut which is higher. it lets you play open chords in different keys to sum it up for you.

you can buy them at almost any music store and most of the time they are just clamped onto the neck.
...Nothing you've ever...
...Planned on ever turned out...
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capos are not absolutely necessary for any song

you can play any song without a capo, but some would be very difficult

capos are often used to make a different fret the 'open note'



It clamps on the neck to make a different fret the "open" note, to make certain positions easier.
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