Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:2/2
K:C
['c2 ec Gcec', 'E2 Gc EcGc F2 Ac FcAc']  
X:1
L:1/8
M:2/2
K:C
 c2 ec Gcec | FcEc DG,B,G, | c2 ec Gcec | fage c/c/c c2 :| E2 Gc EcGc | F2 Ac FcAc | G2 Bd GdBd | 
 fdec cBAG | E2 Gc EcGc | F2 Ac FcAc | fagf edec | GcBd c/c/c c2 ||  