Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:G
['D2 G3 G B3 A AG GF(FE)']  
X:1
L:1/8
M:4/4
K:G
 D2 | G3 G B3 A | AG GF(FE) EE | A3 B(dc) BA | (G2 F2) z2 | DD | G2 AB(cB) GE | 
 (D3/2 E/) DC (B, D2) D | EF GB(BA) GF | G4 z2 ||  