Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:C
['GF ECEG CEGE GcEc Gcec fdBd', 'cege fdBd']  
X:1
L:1/8
M:4/4
K:C
 GF | ECEG CEGE | GcEc Gcec | fdBd ecGc | dcBA G2 GF | ECEG CEGE | GcEc Gcec | fdBd egBd |1 
 c2 e2 c2 :|2 c2 e2 c2 ef || gage c'gfa | gage cege | fdBd ecGc | dcBA G2 ef | gage c'gfa | 
 gage cege | fdBd egBd | cc'ge c2 ef | gage c'gfa | gage cege | fdBd ecGc | dcBA G2 GF | 
 ECEG FDFA | GEGc AFAc | BGBd fdBd | c2 e2 c2 ||  