Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['d3 BdB', 'gfg dcB', 'c2 A2 B']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 e | d3 BdB | G2 A B2 c | d3 BdB | cAB c2 e | d3 BdB | G2 A B2 d | gfe dcB | A2 B c2 :| d | 
 gfg dcB | gfg dcB | gfg dcB | A2 B c2 f | gfg ab[ac'] | bag fga | gfe dcB | A2 B c2 :| 
"^last time" A2 B cAF | !fermata!G6 |]  