Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:4/4
K:G
['GBAG EGDB GABD EA A2 DGGF G2', 'ea a2'  
X:1
L:1/8
M:4/4
K:G
 GBAG EGDB | GABD EA A2 | DGGF G2 (3Bcd | gedB cBAB | GBAG EGDB | GABD EA A2 | DGGF G2 (3Bcd | 
 gedc Bdef || gBdg dgfg | ea a2 ea a2 | gBdg bgag | (3efg dc Bdef | gBdg dgfg | ea a2 ea a2 | 
 bg g2 gedB | degd egdB ||  