Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/16
M:2/4
K:G
['AGAB AGEF GAGE', 'dBGB .c2(ec) .B2(dB) AGAB (AG).E2 |{a} gfge']  
X:1
L:1/16
M:2/4
K:G
 (uAB) | .c2(ec) .B2(dB) |{B} AGAB AGEF | GAGE DEGB |{B} AGAB AGEB | .c2(ec) .B2(dB) | 
{B} AGAB AGEF | GAGE DEGA | BGAF G2 :: uD2 | GABc .d2(ef) |{a} gfge dBGB | .c2(ec) .B2(dB) | 
{B} AGAB (AG).E2 |{a} gfge dBGB | cABG AGEF | GAGE DEGA | BGAF G2 :|  