Construct a musical piece conforming to the alphabetically indicated blueprint and the supplied motif.
X:1
L:1/8
M:4/4
K:D
['d3 B =cAGc Addc dfag fded =cAGF', 'd2 cd eaag', '=cAGc Addc dfag fded =cAGF EG=cG ED', 'cd eaag']  
X:1
L:1/8
M:4/4
K:D
|: d3 B =cAGc | Addc dfag | fded =cAGF | EG=cG ED D2 :: fdd^c d2 cd | eaag efge | fddc d2 cd | 
 eaag edde ::"^Variation:" _f2 ed =cAGc | Addc dfag | fded =cAGF | EG=cG ED D2 :: fdd^c d2 cd | 
 eaag efge | fddc d2 cd | eaag edde :|  