Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:A
['', '^de =dece', 'AcBA FBBc dcBA FBBA B2 BA c2'  
X:1
L:1/8
M:4/4
K:A
 B/c/d |: e2 ^de =dece | e/e/e ^de =dece | fBBA Bcd=g | fBBA A B2 c | defd cdec | dcBA c2 AF | 
 EAAB BcAF |1 EAGB A2 B/c/d :|2 EAGB AFEC |: A,3 B BcAF | EAGB AcBA | FBBc dcBA | FBBA B2 BA | 
 c2 ec fcec | dcBA BcAF | EAAB BcAF |1 EAGB AFEC :|2 EAGB ABcd ||  