Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/16
M:4/4
K:A
['', 'a2A2 cdec', 'fgaf a2e2a2c2']  
X:1
L:1/16
M:4/4
K:A
 fg |: a2A2 cdec a4 e2fg | a2A2 cdec g4 B2fg | a2A2 cdec{e} c2A2 cdec | defd cdec BcdB fgaf :: 
 a2e2a2c2 a2e2 fgaf | a2e2a2c2 a2B2 fgaf | a2e2a2A2 a2A2 cdec | defd cdec BcdB fgaf :|  