Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:G
['(3Bdc (3BAG', '(3fag (3fed']  
X:1
L:1/8
M:4/4
K:G
|: GABc dBAG | gfge e2 d2 | (3Bdc (3BAG (3ced (3cBA | (3Bdc (3BAG (3FGA (3DEF | GABc dBAG | 
 gfge e2 d2 | (3Bdc (3BAG (3ced (3cBA | (3fed (3cBA G2 g2 :: defg (3fag (3fed | 
 (3gba (3gfe (3fag (3fed | defg (3fag (3fed | (3bd'^c' (3bag (3fag (3fed | 
 (3Bdc (3BAG (3ced (3cBA | (3fag (3fed (3gba (3gfe | (3dba (3gfe (3ded (3cBA | G2 g2 G,2 z2 :|  