Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:A
['efge a2 gf eagf', 'c2 c2']  
X:1
L:1/8
M:4/4
K:A
 efge a2 gf | eagf edcd | efge a2 gf | eagf edcA | BAGB A4 :| c2 c2 B4 | BABc dcBA | c2 c2 B3 c | 
 BAGB A4 | EAAB c2 c2 | B4 BABc | dcBA c2 c2 | B3 c BAGB | A4 EAAB | c2 c2 B4 | BABc dcBA | 
 c2 c2 B3 c | BAGB A4 ||  