Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:3/4
K:Eb
['E2 z EGB e3 dc=B d2 cFG=A']  
X:1
L:1/8
M:3/4
K:Eb
 BBB | B3 AAA | A2 GGGG | G3 FCD | E2 z EGB | e3 dc=B | d2 cFG=A | c3 BFG | E2 z EGB | e3 dc=B | 
 d2 cFG=A | c3 BFG | E2 z |]  