Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:Amix
['', 'c2 Bc ABcd', 'aA A/A/A']  
X:1
L:1/8
M:4/4
K:Amix
 ed |: c2 Bc ABcd | egfd edBd | gB B2 gBaB | gB B2 gfed | c2 Bc ABcd | eged edBd | g2 gd efed | 
 c2 B2 A2 dc :: aA A/A/A aAbA | aA A/A/A agef | gB B2 gBaB | gB B2 gfeg |1 aA A2 aAbA | 
 Aa A2 agef | g2 gd efed | c2 B2 Aefg :|2 aA A/A/A gA A/A/A | fA A/A/A edef | gfgd efed | 
 c2 B2 c2 ed |]  