Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:G
['dB B2', 'EGDG EGDG'  
X:1
L:1/8
M:4/4
K:G
 DG G2 EGce | dB B2 ABce | dB B2 ABGA | BG G2 EGDG | BG G2 EGce | dB B2 ABce | dB B2 efge |1 
 fdcA BGGE :|2 fdcA BGGB || dB B2 ABGA | BG G2 EGDG | EGDG EGDG | (3EFG AB cdeg | dB B2 ABGA | 
 BG G2 EGDG | EGDG EGce |1 dBcA BGGB :|2 dBcA BGGE ||  