Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:2/4
K:D
['B2 c>d', 'z g>fga bagf gfed fedc d>cBd e>dcA']  
X:1
L:1/8
M:2/4
K:D
|: d>cBd | e>dcA | B2 c>d | d3 A | d>cBd | (e/f/)e/d/ cA | B2 c>d | d3 z :: g>fga | bagf | gfed | 
 fedc | d>cBd | e>dcA | B2 c>d | d3 z :|  