Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:2/4
K:D
['dB AF A2', 'd e fe fg aa gf eb']  
X:1
L:1/8
M:2/4
K:D
 f/e/ | dB AF | A2 AA/B/ | d2 ed/e/ | fe e/g/f/e/ | dB AF | A2 AB/c/ | d2 ed/e/ | fd d :: e | 
 fe fg | aa gf | eb b^a | be e/g/f/e/ | dB AF | A2 AB/c/ | d2 ed/e/ | fd d :|  