Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:4/4
K:G
['F3 G Ac c2 fgaf gfdc dfcf', 'AFFc dfcf d3', 'd3 e dB B2', 'BGGd egdg egbg |1 aged egge :|2']  
X:1
L:1/8
M:4/4
K:G
 F3 G Ac c2 | fgaf gfdc | dfcf d3 =B | cAFG AG G2 | F3 G Ac c2 | fgaf gfdc | dfcf d3 f |1 
 cAGc AFFE :|2 cAGc AF F2 |: c3 d cA A2 | BAGB AFFc | dfcf d3 =B | cAFG AG G2 | c3 d cA A2 | 
 BAGB AFFc | dfcf d3 f |1 cAGc AF F2 :|2 cAGc AFFE || G3 A Bd d2 | gabg aged | egdg ege^c | 
 dBGA BAAB | G3 A Bd d2 | gabg aged | egdg egbg |1 aged eg g2 :|2 aged egge |: d3 e dB B2 | 
 cBAc BGGd | egdg ege^c | dBGA BAAB | d3 e dB B2 | cBAc BGGd | egdg egbg |1 aged egge :|2 
 aged eg g2 ||  