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:Emin
['Ac BE', 'Be e2']  
X:1
L:1/8
M:4/4
K:Emin
|: Gc | B/c/B Ac BE G/F/E | D2 EG DEGc | BE E2 CE E2 | edBG c2 Gc | B2 Ac BE E2 | D/D/D EG DEGc |1 
 Be e2 gecF | edBG c2 :|2 Bece gecf | edBg f/g/f |: Bd | e2 Be geBb | c'b a/g/f ge c/B/A | 
 Be e2 ce e2 | df a/g/f ge c/B/A | Be e2 geBb | c'2 gb fa g/e/c |1 Bece gecf | edBg f2 :|2 
 Be e2 gecF | edBG c2 ||  