Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:2/4
K:G
['GB DE G2 g>e', 'Bd Bd g2 g>e dB'  
X:1
L:1/8
M:2/4
K:G
 B/A/ | GB DE | G2 g>e | dB AG | d/e/d/B/ AB/A/ | GB DE | G2 g>e | dG AG/A/ | BG G :: G/A/ | 
 Bd Bd | g2 g>e | dB AG | d/e/d/B/ AG/A/ | Bd Bd | g2 g>e | dB AG/A/ | BG G :|  