Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/4
M:3/4
K:C
['(3G/A/B/ c', 'A B c', 'c B3 B A B c B/c/']  
X:1
L:1/4
M:3/4
K:C
 (3G/A/B/ |:"C" c B A | G F E |"G7" F2 G | B3 | F2 G | B3/2 A/ G/F/ |"C" E2 G | c z/ G/ A/B/ | 
 c B A | G F E |"G7" F2 G | B3 | G2 G | B A B |"C" c E/G/"G7" F/D/ |1"C" C2 (3G/A/B/ :|2"C" C2 c |: 
"F" A3 | A B c |"C" G3 | G A G |"G7" F3 | F G F |"C" E3 | E F G |"F" A3 | A B c |"C" e3 | e d c | 
"G7" B3 | B A B |"C" c B/c/ e/d/ |1 c2 c :|2 c2 z |]  