Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
Q:1/2=66
M:4/4
K:none
['BecA dfea', 'B2 a>gfe aAce dfea |1 eBAe :|2']  
X:1
L:1/8
Q:1/2=66
M:4/4
K:none
 ce A/<A/A BecA | dfea ec B2 | ceAA BecA | dfea |1 ec A2 :|2 ecAe || a>gfe eAce | dfea ec B2 | 
 a>gfe aAce | dfea |1 eBAe :|2 eB A2 |]  