Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:2/2
K:Dmin
['G2 G2', 'f3 g (fg)(ag) (fc)(df)']  
X:1
L:1/8
M:2/2
K:Dmin
 (CD) | F3 G A3 f | (cA)(cd) (cA)(GF) | A2 G2 G2 (FG) | (F/G/A) G2 G2 (FD) | (CD)(FG) (Ac)(GA) | 
 (FE)(FG) (AB)(cA) | d2 D2 (DF)(CD) | F2 (ED) D2 || c2 | f3 g (fg)(ag) | (fc)(df) (cA)(GF) | 
 A2 G2 G2 (FG) | (FG/A/) G2 G2 z c | f3 g (fg)(ag) | (fc)(df) (cA)(GA) | F2 (ED) (DF)(CD) | 
 F2 (ED) D2 |]  