Construct a musical piece conforming to the alphabetically indicated blueprint and the supplied motif.
X:1
L:1/8
M:4/4
K:D
['b2 a2', 'a2 b2']  
X:1
L:1/8
M:4/4
K:D
 A2 d2 ffdf | abaf gage | AA c2 eece | b2 a2 abaf | A2 d2 ffdf | agaf gage | AA c2 eece |1 
 b2 a2 d4 :|2 b2 a2 d3 A |: df e2 d2 AA | FAAF Ad f2 | d2 BB GBBG | Bd g2 e2 ce | AA A2 a2 g2 |1 
 a2 b2 a2 fA :|2 a2 b2 c2 d2 |]  