Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/4
M:2/4
K:Bb
['A F e', 'd f'  
X:1
L:1/4
M:2/4
K:Bb
"^A" F | B F | d F | d c/B/ | A F | e d/F/ | c3/2 B/ | A F | e F | c d/c/ | B F | d/F/ d/c/ | (B2 | 
 !breath!B) F | B F | d F | d/c/ B | A F | e d/f/ | c3/2 B/ | A F | e F | c d/c/ | (B2 | B) || 
"^B" F =E/F/ | G e | d f | c f | B F | d f | B c/B/ | A F | e f | A c | (B2 | B) z | F =E/F/ | 
 G e | d f | c f | B F | d f | B c/B/ | A F | e f | A c | (B2 | B) z |]  