Construct a musical piece utilizing the given sequence in alphabetical form and the supplied motif.
X:1
L:1/8
M:12/8
K:D
['A2 f', 'Aff Aff', 'edc d3 dcB c3 cBA GBB GBB', 'edc d3 dcB c3 cBA GBB GBB']  
X:1
L:1/8
M:12/8
K:D
 A2 f A2 f A2 f fed | B2 g B2 g B2 g gfe | cde A2 A ABA a2 f | g2 e c2 e d3 dcB || 
"^var." Aff Aff Aff fed |"^var." Bgg Bgg Bgg gfe | cde A2 A ABA a2 f | g2 e c2 e d3 d2 e |] 
 f3 fed e3 edc | d3 dcB c3 cBA | GBB GBB FAA FAA | EDE e2 d cBc d2 e || f3 fed e3 edc | 
 d3 dcB c3 cBA | GBB GBB FAA FAA | EDE e2 d cBc d2 B |]  