Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:G
['d/d/d cd', 'DG G/G/G']  
X:1
L:1/8
M:4/4
K:G
|: DG G/G/G AGGd | d/d/d cd BGEd | d/d/d cd BGDG | dGgd e2 eg | d2 dc BG G/G/G | DG G/G/G AGGd | 
 d/d/d cd BGEG | DcBG cBGE :: DG G/G/G CG G/G/G | BGAB AGEG | DG G/G/G CG G/G/G | BGAB A2 GE |1 
 DG G/G/G EG G/G/G | BGAB degd | e3 d B2 AG | A3 G ABGE :|2 DG G/G/G EG G/G/G | BGAB degd | 
 e2 ed e2 ge | dcBG cBGE ||  