Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:2/4
K:G
['D GB d2']  
X:1
L:1/8
M:2/4
K:G
 D | GDGA | B3 B/A/ | GABc | d3 d | dddg | e2 ed/c/ | BBAA | G2 z D | GDGA | B3 B/A/ | GABc | 
 d3 d | dddg | e2 ed/c/ | BBAA | G2 z D | GB d2 ge | dB G3 D | GB d2 ge | dB G3 D | GB d2 g2 | 
 e3 edc | B4 A2 | G4 z2 |]  