Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:Amix
['', 'e2 ef', 'a2 ef'  
X:1
L:1/8
M:4/4
K:Amix
 d2 |: e2 ef ecBA | dgfe fbad | e2 ef ecAc | dcBA BcdB | e2 ef ecBA | dgfe fbae | a2 ef ecAF |1 
 EdcB A2 d2 :|2 EdcB A2 ce |: a2 gb af e2 | fgfe fbag | a2 ef ecAc | dcBA BcdB |1 a2 gb af e2 | 
 fgfe fbae | a2 ef ecAF | EdcB A2 ce :|2 e2 ef ecBA | dgfe fbae | a2 ef ecAF | EdcB A2 Af ||  