Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:4/4
K:C
['c2 cB cGGA c2 cd eage c2', 'gc c/c/c', 'BABd c2 cB cGGA c2 cd eage', 'aA A/A/A c2']  
X:1
L:1/8
M:4/4
K:C
 c2 cB cGGA | c2 cd eage | c2 dc B2 Ac | BG G/G/G BcdB :| gc c/c/c cBAa | gc c/c/c agea | 
 gc c/c/c cBAc | BGGA BcdB | gc c/c/c cBAa | gc c/c/c age^f | gage c2 dc | B2 GA BABd |: 
 c2 cB cGGA | c2 cd eage | c2 dc B2 Ac | BG G/G/G BcdB :| aA A/A/A c2 BG | Agab ageg | 
 aA A/A/A c2 dc | BGGA BcdB | aA A/A/A c2 BG | Agab age^f | gage c2 dc | B2 GA BGBd ||  