Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:2/4
K:Amin
['e>d ef', 'A>E AB cB A2 c>B cd', 'd>c de d>c Bd', 'B>e dc B4']  
X:1
L:1/8
M:2/4
K:Amin
 e>d ef | af ed | e>d ef | e2 d2 | e>d ef | af ed | e>d ef | e2 d2 :| A>E AB | cB A2 | c>B cd | 
 c2 B2 | A>E AB | cB A2 | c>B cd | c2 B2 :| d>c de | d>c Bd | cA- AB | cB- Bc | d>c de | d>c Bd | 
 cA Bc | A2 A2 :| B>e dc | B4 | ef- fe | ed- dc | B>e dc | B4 | e2 d2 | c4 :|  