Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/4
M:3/2
K:G
['B) .B', '(g f)']  
X:1
L:1/4
M:3/2
K:G
|: (D G) .G .G (F A) | (G B) .B .B (c e) | (d B) .B .G (F G) | A B c E F2 | (D G) .G .G (F A) | 
 (G B) .B .B (c e) | (d B) .B .G (A/c/)(B/d/) | c E E F G2 :| .d (g f) (g d) .B | (A B) .c .d B2 | 
 .d (g f) (g f) .g | (e b) a ^c d2- | d =f e d c B | (c e) A G F2 | (d B) .B .G (A/c/)(B/d/) | 
 c E E F G2 :|  