Theory

how melody and harmony interact

1.  watch video and make a melody for the “Polly Woddle Doodle” progression in C

2.  try same idea in a different key, (by moving the scale to a different fret, or, if you know multiple major scale positions, a different scale shape as well)

more advanced:

3.   try same concept with a I and IV progression

4.  if you know minor scales, try same concept with a I and V7 in a minor key

5.  if you know minor scales, try same concept with I and IV in minor key

even more advanced:

6. build longer progressions (ex: 4 or 8 bars) with multiple diatonic chords, and create written or improvised melodies  using same concept