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: