Construct musical works adhering to the required format and the supplied musical theme.
X:1
L:1/8
Q:1/2=90
M:4/4
K:G
['GFGA B2', 'GFGA B2'  
X:1
L:1/8
Q:1/2=90
M:4/4
K:G
 G2 | EGDG EGDG | GFGA B2 GB | cBAG GFGA | B2 A2 A3 G | EGDG EGDG | GFGA B2 GB | cBAG GFGA | 
 B2 G2 G2 :: df | gdBd GdBd | gdBd GdBd | cBAG GFGA | B2 A2 A3 G | EGDG EGDG | GFGA B2 GB | 
 cBAG GFGA | B2 G2 G2 :|  