Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:9/8
K:D
['dBG FAF', 'AFD f/g/af e/f/ge B/c/dB', 'AFD G2 e F2 d E2']  
X:1
L:1/8
M:9/8
K:D
 dBG FAF E/F/GE | =cEE E2 B AFD | dBG FAF EGE | AFD D2 B AFD :: f/g/af e/f/ge B/c/dB | 
 =cEE E2 B AFD | f/g/af e/f/ge B/c/dB | AD D2 B AFD :: G2 e F2 d E2 D | =cEE E2 B AFD | 
 G2 e F2 d E2 B | AFD D2 B AFD :|  