Develop musical compositions in line with the specified format and incorporating the provided musical theme.
X:1
L:1/4
M:4/4
K:G
['B/c/ d B G E c A', 'D g'  
X:1
L:1/4
M:4/4
K:G
 B/c/ | d B G E | c A F D | f d ^c/d/e/c/ | d D2 :: g/a/ | b G F b | a F E a | g E D g | 
 f D2 C/B,/ | D g D f | C e B, d | B G F/G/A/F/ | G G,2 :|  