Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/16
Q:1/4=72
M:2/4
K:none
['ecBc A2AB cBAc e4', 'feag fece agfe', 'ecBc A2ce feaf', 'aece fece fefa f2ec']  
X:1
L:1/16
Q:1/4=72
M:2/4
K:none
 af | ecBc A2AB | cBAc e4 | fefa fecf | ecBA B2af | ecBc A2AB | cBAc e4 | fecf ecBe | c2A2 A2 :| 
 ce | feag fece | agfe f2ec | A2AB ABce | fecA B2ce | feag fece | agfe f2ga | fecf ecBe | 
 c2A2 A2 :| cd | ecBc A2ce | feaf e2fg | agfa fedf | ecBA B2cd | ecBc A2ce | feaf e2ag | 
 fecf ecBe | c2A2 A2 :| g2 | aece fece | fefa f2ec | aece fecf | ecBA B2g2 | aece fece | 
 fefa f2ec | fecf ecBe | c2A2 A2 :|  