Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
['B AFD', 'g f2 d dfd BdB AFD GBG']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
 B | AFD DFD | dBd AFD | GBG FAF | BGE E2 B | AFD DFA | dcd AFD | GBG EFG | AFD D2 :| g | 
 f2 d dfd | BdB AFD | GBG FAF | BGE E2 g | f2 d dfd | BdB AFD | GBG EFG | AFD D2 |]  