Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:6/8
K:D
['DFA dfa', 'dcB AFA']  
X:1
L:1/8
M:6/8
K:D
|: DFA dfa | geg fed | DFA dfa | gce d3 | DFA dfa | geg fed | DFA dfa | gce d3 :: dcB AFA | 
 GBE FAD | dcB AFA | GCE D3 | dcB AFA | GBE FAD | DFA dfa | gce d3 :|  