once you have mastered playing the Am7 chord, you must learn these things (do not go any further until you have mastered these abilities):
- play the Am7 arpeggio. It doesn't really matter where on the neck you play it, as long as you play the correct notes and can visualize where the notes are going to be. Name the notes as you play it (yes, out loud, it really helps), and name the degree as you play it (root A, third C, fifth E, and seventh G)
- play the G maj scale. Again, it doesn't matter where you play it, as long as you play the correct notes and can visualize where the notes are going to be. Name the notes as you play it. Incidentally, by playing the G major scale, you are also playing the A Dorian mode. I prefer to thing of the G scale because it puts jazzier notes under your fingers-you will tend to start on "G" when you play (the seventh of am7). this is a much hipper note then "A"
- be able to move from one note to the next in the scale and arpeggio-be able to skip around at will. It is important to know where all of the notes are, instantly. The less you worry about the mechanics, the more you can worry about the music.
you should be able to play either the scale or the arpeggio along with the groove here...practice until you can. Play directly up and directly down-give each note one count (quarter notes)..for bonus points, play eighth notes (give every 2 notes 1 count)