Develop a musical piece using the given theme and incorporating the letter-based structure provided.
X:1
L:1/8
M:4/4
K:C
['GEGE C2 E2', 'c2 c2']  
X:1
L:1/8
M:4/4
K:C
 e2 e2 c2 cA | GEGE C2 E2 | GDGD B,2 D2 | GEGE C2 E2 | e2 e2 c2 cA | GEGE C2 E2 | GDGD B,2 B,A, | 
 G,2 C2 C2 || e2 e2 c2 c2 | g^f g2 B2 B2 | g^f gB B2 B2 | g^fgc c2 c2 | e2 e2 c2 c2 | ge g2 B2 B2 | 
 gegB A2 B2 | c2 dB c2 z2 ||  