Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
M:3/4
K:A
['b2 a2'  
X:1
L:1/8
M:3/4
K:A
"A" e2 e3 a |"E7" ag g4 |"D" d2 d3 f |"A" fe e4 |"F#7" c2 f2 e2 |"Bm" e_e d4 |"E7" d2 c2 B2 | 
"A" f2 e4 |]:"A" c'2 b2 a2 |"Bm" gf b4 |"D" b2 a2 f2 |"A" ^de a4 |"A" c'a ae ec |"Bm" db b4 |1 
"E7" b2 f3 g |"A" b2 a4 :|2"E7" b2 c'3 b |"A" b2 a4 :|  