Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:2/2
K:D
['(3(efg) (dg)']  
X:1
L:1/8
M:2/2
K:D
 Bddg egdg | egdB (TBA) A2 | Bddg edgd | BdAc (TBG)G z | Bddg egdg | egdB (TBA)A z | bgaf gedc | 
 BdAc (BG) G2 | (3(efg) (dg) agbg | (3(efg) (dg) ea a2 | (3(efg) dg agbg | edef ag g2 | 
 (3(efg) (dg) agbg | (3(efg) (dg) (ea) a2 | bgaf gedc | BdAc (BG) G2 |]  