Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:D
['A,D D/D/D A,D FA BF AF EF', 'fd gf']  
X:1
L:1/8
M:4/4
K:D
 A,D D/D/D A,D FA | BF AF EF Ac | dB cA Bd AF | GE FD ED B,D | A,D D/D/D A,D FA | BF AF EF Ac | 
 dB cA (3Bcd AF | GF EG FD D2 :: fd d/d/d fd gd | fd gf ed Bc | dB BA Bc de | fd gf ec de | 
 fd d/d/d fd gd | fd gf ed Bc | dB BA BA GF | GF EG FD D2 | fd d/d/d fd gd | fd gf ed Bc | 
 dB BA Bc de | fd gf ec de | fa gf ed BA | df ed BA FA | A,D D/D/D A,D FA | BF AF D4 |]  