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
Q:1/2=120
M:4/4
K:G
['B2 c3']  
X:1
L:1/8
Q:1/2=120
M:4/4
K:G
 Bc | d2 B2 c3 d | e2 B2 c3 B | A3 G A2 F2 | G6 ef | g4 f4 | e2 a2 g2 f2 | e3 d e2 ^c2 | d6 ef | 
 g2 d2 e2 B2 | c3 B A3 b | ab g2 g3 f | g6 |]  