Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/4
Q:1/2=112
M:2/2
K:G
['B G']  
X:1
L:1/4
Q:1/2=112
M:2/2
K:G
|:"^A" B |"Em" G/G/ G B3/2 A/ |"Em" B G G B |"Am" A/A/ A e3/2 d/ |"Am" e A A B |"C" c3 e | 
"G" d/c/B/A/"Em" B G |"B7" F/F/ F B3/2 A/ |"Em" G E E ::"^B" B |"G" G/G/ G g3/2 f/ |"G" g d d g | 
"Am" e/e/ e a3/2 g/ |"Am" a e e f |"C" g a"A7" e =f |"Dm" d/c/B/A/"G" B G | 
"Am" A/A/ A"B7" B3/2 F/ |"Em" G E E :|  