Construct a musical piece utilizing the given sequence in alphabetical form and the supplied motif.
X:1
L:1/8
M:2/2
K:A
['AcBA AcBA', 'ecaf ecBA']  
X:1
L:1/8
M:2/2
K:A
 AcBA AcBA | afec BABc | AcBA AcBA | BABc fefa :: ecaf ecBA | ecaf e2 c2 | ecaf ecBA | 
 B>AB>c{g} f2{f} e2 :|  