Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/4
M:4/4
K:G
['e d']  
X:1
L:1/4
M:4/4
K:G
 B |"G" d3/2 d/ d e |"G" d B2 d |"Em" e3/2 e/ e f |"Em" e B2 d |"C" e3/2 e/ e f |"C" g/ g3/2 f e | 
"G" d d g f |1 e B2 :|2"G" e d B G |]"D" A3/2 A/ A B |"D" A4 | z"G" B B3/2 A/ |"G" B/ c3/2"G7" d2 | 
 z"C" e e3/2 d/ |"C" e/ f3/2 g e |"G" B B"D7" A A |"G" G3 |] z4 | z4 ||  