Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/4=120
M:6/8
K:G
['ABc ABc', 'ded g2 d B2 A DEF GAB']  
X:1
L:1/8
Q:1/4=120
M:6/8
K:G
|:"^A" DEF GAB | cdc BAG | cBA Adc |1 BAG FED :|2 BAG G3 ||"^B" ABc ABc | ABc d3 | ded ded | 
 g2 d B2 A | DEF GAB | cdc BAG | cBA Adc | BAG G3 ||  