Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/4
M:4/4
K:D
['A F', 'f d'  
X:1
L:1/4
M:4/4
K:D
 A/ | d d B/c/d/B/ | A F A F | d d B/c/d/B/ | A F (3E/F/E/ D | d d B/c/d/B/ | A F A d/e/ | 
 f d e c | d2 d3/2 :: e/ | f d d e/f/ | g f e d | f d A d | f d/f/ (a a/)g/ | f d d e/f/ | 
 g f e d/e/ | f d e c | d2 d3/2 :|  