Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:4/4
K:G
['B2 AG EDB,E D2 GD EFGA BGAG', 'dB B2'  
X:1
L:1/8
M:4/4
K:G
 B2 AG EDB,E | D2 GD EFGA | BGAG EDB,D | EAAG ABcd | B2 AG EDB,E | D2 GD EFGA | BGAG EDB,D |1 
 EAAG ABcd :|2 EAAG ABce || dB B2 GB B2 | dB B2 cBce | dB B2 GBgB | c2 Bc ABce | dB B2 gB B2 | 
 dBdB cBce | d2 eg fgag | fefd cBce | dB B2 GB B2 | dB B2 cBce | dB B2 gBdB | c2 Bc ABce | 
 dBdg eceg | fgaf gfga | bgag edBd | eaaf gedc ||  