Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
Q:1/8=300
M:6/8
K:D
['ABc dcd ecA cde fef ged', 'efg a2 a']  
X:1
L:1/8
Q:1/8=300
M:6/8
K:D
|: A | ABc dcd | ecA cde | fef ged | cAA A3 | ABc dcd | ecA cde | fef ged | cAA A2 :: d | 
 efg a2 a | ged cde | efg a2 a | gef g2 z | efg a2 a | ged cde | fef ged | cAA A2 :|  