Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:4/4
K:C
['BEA Dec |[M:2/2][K:G]SOSOO .!fermata!PMTCO(3(MDEF) G2 (GA) BGBd', 'abaf gage d2', 'ABAG EAAG AcBA GFGA BGBd efge dBAG']  
X:1
L:1/8
M:4/4
K:C
 BEA Dec |[M:2/2][K:G]SOSOO .!fermata!PMTCO(3(MDEF) | G2 (GA) BGBd | (ef)ge (dB)AG | EAAG ABAG | 
 EAAG AcBA | GFGA BGBd | efge dBAG | EGGF GAGE | DGGF G2 :: (ga) | b2 bg abaf | gage d2 Bd | 
 eaag abag | eaag a2 (ga) | babg abaf | gage d2 (Bd) | eggf gage |1 dggf g2 :|2 dgga gedB || 
 G2 (GA) BGBd | (ef)ge (dB)AG | EAAG ABAG | EAAG AcBA | GFGA BGBd | efge dBAG | EGGF GAGE | 
 DGGF G2 |]  