Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:Dmix
['c3 e', 'dcAG E3 G']  
X:1
L:1/8
M:4/4
K:Dmix
 DdcA c3 A | GE E2 Ddce | d3 e f2 ge | dfed cAAB | c3 e dfeg | f/g/age fded | c3 e dcAG |1 
 E3 G A/B/A GE :|2 E3 G FD D2 || f3 d Adfd | cG G2 cedc | AdcA dcAG | E3 G FAde |1 f3 d Adfd | 
 cG G2 cedc | AdcA dcAG | E3 G FD D2 :|2 dage a2 ge | f/g/age fded | c3 e dcAG | E3 G A/B/A GE ||  