Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:4/4
K:C
['dB cBAG (3(ABc)', 'ABcA d2']  
X:1
L:1/8
M:4/4
K:C
 BEA |[M:2/2][K:D]SOSOO .!fermata!PMTuCOMAd{e} dB cBAG | (3(ABc) GF EF G2 | Ad{e} dB cBAG | 
 (3(ABc) GE TED D2 :| FEFG ABcA | d2 (dc) AGFD | FEFG ABcA | d2 cA G2 AG | FEFG ABcA | d2 dcAB c2 | 
 (3(ded) cA G2 (FG) | (3(ABc) (Bd) cAGE |]  