Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
M:2/2
K:A
['cBAc BAGB Aceg', 'gf)ed cdef =g2 (3(efg) a3 (b a=g)ef']  
X:1
L:1/8
M:2/2
K:A
 (ued) | cBAc BAGB | Aceg aefd |1 cBAc BAGB | Aceg a2 :|2 dcBA GABc | BAGB A2 |: (uef) | 
 =g3 (a gf)ed | cdef =g2 (3(efg) | a3 (b a=g)ef | =gedB Adef | =g3 (a gf)ed | cdef =g2 (3(efg) | 
 a3 (b a=g)ef | =gedB"^D.C." A2 |]  