Develop a musical work using the identified alphabetic pattern and the supplied melody as a theme.
X:1
L:1/8
M:2/4
K:G
['B2 G z']  
X:1
L:1/8
M:2/4
K:G
 G2 A2 | B2 G z | G2 AA | B2 G z | B2 AG | BB B2 | AAAG | BB B2 | A2 A2 | G2 z2 |]  