Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:6/8
K:C
['D G2']  
X:1
L:1/8
M:6/8
K:C
 D | G2 A B2 D | G2 A B2 D | G2 A(Bd) B | (AG) E- E2 D | G2 A B2 D | G2 A B2 B | A2 G E2 D | 
 E2 G G2 E | D2 B, B,A,B, | DDD DB,D | G2 G GAB | EEE E2 ||  