Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
Q:1/4=160
M:2/4
K:G
['A BB cc']  
X:1
L:1/8
Q:1/4=160
M:2/4
K:G
|: g2 d2 | B>c de | ed cB | d2 c2 | a2 f2 | d>e fg | fe dc |1 B2 z2 :|2 B2 z A | BB cc | d B2 A | 
 BB cc | d2 z d | ed cB | d c2 B | A2 Bc | B2 z A | BB cc | d B2 A | B2 cc | d2 z d | ed cB | 
 dd cB | AA Bc | B2 ||  