Now let's turn our open A and D chord into Major 7 Chords.

So here we have our basic open A chord. Now all we really have to do is take the note that we have on the G string and lower it by a half step (to the 1st fret). Doing this requires a change of fingering.

Let's also try changing the D major chord to a D major 7 chord.

Now let's try switching between the A major 7 and D major 7 chords.