Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:E
['=G2 =F E2 G =GEG G2 =F']  
X:1
L:1/8
M:6/8
K:E
 A | AAA/A/A=GA | =G2 =F E2 G | =GEG G2 =F | E4 z A | AAA/A/A=GA | =G2 =F E2 G | =GEG G2 =F | 
 E4 z A | AAAA=GA | =G2 =F E2 G | =GEG G2 =F | E4 z A | AAAA=GA | =G2 =F E2 G | =GEG G2 =F | E4 z |]  