Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:6/8
K:G
['B/c/ dBd', 'd2 f/g/ afd gdB ecA dBG gfe']  
X:1
L:1/8
M:6/8
K:G
 B/c/ | dBd efg | dBG G2 B/c/ | dBd ecB | AFD D2 B/c/ | dBd gab | afd def | geg fdf | ed^c d2 :: 
 f/g/ | afd gdB | ecA dBG | gfe dcB | AFD D2 B/c/ | dBd efg | dBG GAB | cac BgB | AGF G2 :|  