Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/4
M:2/2
K:G
['B c']  
X:1
L:1/4
M:2/2
K:G
|:"G" D G G2 | z e/d/ ^c/d/B/G/ |"D7" D A A2 | z e/d/"^(G)" ^c/d/B/G/ |"G" D G G2 | 
 z e/d/ ^c/d/B/G/ |"D7" A B c B/A/ |"G" G B G2 ::"C" e f g f/e/ |"G" d c B2 |"D7" A B c B/A/ | 
"G" B c d2 |"C" e f g f/e/ |"G" d c B2 |"D7" A B c B/A/ |"G" G B G2 :|  