Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:6/8
K:G
['gdc ABG FGA BAG', '', 'cEc dcB cBc']  
X:1
L:1/8
M:6/8
K:G
 gdc ABG | FGA BAG | DFG EFG | DCB, A,B,D | gdc ABG | FGA BAG | dcB cAG |1 FDF GBd :| FDF GAF || 
 EDE cEc | dcB cBc | EDE cEB | DAD BDd | EDE cEc | dcB cBc | def gdB |1 AGA BGD :|2 AGA Bdf ||  