Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:G
['c2 A2', 'b2 gb bagb a2 fa agef gafg'  
X:1
L:1/8
M:4/4
K:G
|: ABc | dGBd GABc | d2 c2 A2 B2 | c2 A2 e3 d | e2 dc BGBc | dGBd GABc | d2 c2 A2 B2 | 
 C2 A2 e2 d2 | G2- G2- G :: fga | b2 gb bagb | a2 fa agef | gafg egdg | egdG BABd | b2 gb bagb | 
 a2 fa agef | gafg eg d2 | g2- g2- g :|  