Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/4
M:3/4
K:none
['F G/F/ F/F/', 'z B G D c z z']  
X:1
L:1/4
M:3/4
K:none
[K:G]"G" G2 B |"D7" d z D |"G" G z G | D z G | B z B | G z G |"D7""_c" c2 B | A G F |1"_c" c2 B | 
"G" G z z :|2"G" G3/2 G/ G | G z z |:[K:D]"D" F G/F/ F/F/ | F G/F/ F/F/ |"A7" A B c |"D" d2 A | 
 F G/F/ F/F/ | F G/F/ F/F/ |"A7" A B c |"D" d z z ::[K:G]"G" B G D |"D7""_c" c2 D | A2 D | 
"G" d2 z | B G D |"Am""_c" c z z |"D7" D E F |"G" G z z :|  