Create musical pieces that follow the designated structure and incorporate the provided musical motif.
X:1
L:1/8
M:4/4
K:D
['A3 g fded (3Bcd ef gfge (3Bcd', 'a2 ea'  
X:1
L:1/8
M:4/4
K:D
 A3 g fded | (3Bcd ef gfge | (3Bcd eg fdfa | gedg eA A2 :| a2 ef g2 fg | eAcA cd e2 | a2 ea fdfa | 
 gedg eAAa |{b} a2 ea fdfg | eAcA cdeg | a2 ea fdfa | gedg eAAa ||  