Hi, I am Franklin Taggart. I am a guitar player and a guitar teacher. I would like to show you how to play a B7 chord on the guitar. The first finger plays the first fret of the fourth string. Your second finger plays the second fret of the fifth string. Ring finger plays the second fret of the second string and your pinky finger plays the second fret of the first string. For the B7 chord, you strum all the bottom five strings. And that is how you make a B7 chord.