Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/2=80
M:2/2
K:C
['c2 c2 ECGE', 'g2 g2 ecfd']  
X:1
L:1/8
Q:1/2=80
M:2/2
K:C
 ec"^tr" c2 Gc"^tr" c2 | ECGE cGEC | fd"^tr" d2 Ad"^tr" d2 | FDAF dA FD | ec"^tr" c2 Gc"^tr" c2 | 
 ECGE cGcd | e<ge<c d<fd<B | cCEG c2 C2 :: eg"^tr" g2 cg"^tr" g2 | ecfd gece | 
 fa"^tr" a2 da"^tr" a2 | fdge afdf | eg"^tr" g2 cg"^tr" g2 | ecfd gecd | e<ge<c d<fd<B | 
 cCEG c2 C2"^*" :|  