Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
Q:1/2=100
M:4/4
K:Dmix
['GA F2 D2 DFED CE G2 GBAG', 'D2 (3(ABc) dAFA dfed ecAc egfe fdec'  
X:1
L:1/8
Q:1/2=100
M:4/4
K:Dmix
 GA | F2 D2 DFED | CE G2 GBAG | FABc dABG | F2 D2 D2 :| (3(ABc) | dAFA dfed | ecAc egfe | 
 fdec dBed | c2 A2 A2 dA | BdFA G2 gf | edcB ABGF | GBCE DBAG | F2 D2 D2 |]  