Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/8
M:2/2
K:A
['', 'A/B/c/d/ ed', 'B2 Aaga eaca eacf eA c2 eaga'  
X:1
L:1/8
M:2/2
K:A
 c |: A/B/c/d/ ed cAed | cAeg ae c2 | A/B/c/d/ ed deA=c | B=GGB =gd B2 :: Aaga eaca | eacf eA c2 | 
 eaga eaca | B=gdg d=G B2 :|  