Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
Q:1/4=130
M:2/4
K:G
['DG BB DG', 'gf ed'  
X:1
L:1/8
Q:1/4=130
M:2/4
K:G
 DG BB | DG BB | DG cB | B2 B2 | cB AG | FG AB | B2 AA | A4 | DG BB | DG BB | DG cB | B2 B2 | 
 cB AG | FG AB | A2 GF | G4 ||[K:D] fd AA | fd AA | gf ed | e2 e2 | gf ed | cd ef | ed cB | AG FA | 
 fd AA | fd AA | gf ed | e2 e2 | gf ed | cA Bc | e2 dc | d4 ||  