Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:4/4
K:C
['ec c2 Gc c2 ec e/g/e c2', 'eg (3agf'  
X:1
L:1/8
M:4/4
K:C
 cd | ec c2 Gc c2 | ec e/g/e c2 c2 | fd d2 Bd d2 | fd f/a/f d2 d2 | ec c2 Gc c2 | ec e/g/e c2 c2 | 
 af ge f/e/d/c/ BGB/d/B | c2 c2 :: eg (3agf eg (3agf | ec e/g/e c2 c2 | fa (3bag fa (3bag | 
 fd f/a/f d2 d2 | eg (3agf eg (3agf | ec e/g/e c2 c2 | afge fedc | BG B/d/B c2 c2 :|  