Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:6/8
K:D
['A, DED F2 G A3 A2 B', 'afd Adf', 'afd Adf']  
X:1
L:1/8
M:6/8
K:D
 A, | DED F2 G | A3 A2 B | Adf afd | e3 e2 f | gfg bag | fef afd | gfg cac | d3 d2 :| f | afd Adf | 
 abg afd | afd Adf | ecA GFE | afd Adf | abg afd | gfg cac | d3 d2 || f | afd Adf | abg afd | 
 afd Adf | ecA GFE | DFA DGB | FAd afd | gfg cac | d3 d2 ||  