Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:3/4
K:G
['GB BA AG', 'd2 (d3 (3e/f/g/) fe dc']  
X:1
L:1/8
M:3/4
K:G
 GB BA AG | G(A/B/) c2 B2 | GB BA AG | G(c/d/) (e2{fe)} d2 | GB BA AG | Gc cB BA | GB BA AG | 
 Gc cB BA | c(e/d/) cB AG | F/G/A/F/ G2 G,2 :: [G,DB]2 TB4 | cB cA B2 | B,2 TB,4 | CB, CA, B,2 | 
 d2 (d3 (3e/f/g/) | fe dc Bc | d2 (d3 (3e/f/g/) | fe dc BA | (3Bcd (3Bcd (3Bcd | B,d dc/B/ c2 | 
 (3ABc (3ABc (3ABc | A,c c(B/A/) B2 | d(g/f/) e3 d | c/B/A/G/ F/G/A/F/ G2"^?" G,2 :|  