Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/8
M:4/4
K:G
['BG G2', '(3Bcd eaab agef g2 bg abge dg'  
X:1
L:1/8
M:4/4
K:G
|: B3 G ABGE | DGBG A3 c | BG G2 A2 ef | gedg eA A2 | (3Bcd BG ABGE | DGBG A3 c | BG G2 A2 ef |1 
 gedc BGGA :|2 gedc BG G2 |: dg g2 agef | gedB GA (3Bcd | eaab agef | g2 bg abge | dg g2 agef | 
 gedB GA (3Bcd | e2 ag egfa |1 gedc BG G2 :|2 gedc BGGA ||  