Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:4/4
K:D
['B A(FED) G2 (GB) A(FED) E2 (EB)', 'defd gfef'  
X:1
L:1/8
M:4/4
K:D
 B | A(FED) G2 (GB) | A(FED) E2 (EB) | A(FED) GABd | AFdF (D2 D) :| A | defd gfef | defd ecBA | 
 defd gfeg | (f/g/a) ef d2 dA | defd gfef | defa ecBA | d>efd gfeg | (f/g/a) Ac d2 d ||  