Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:4/4
K:A
['B2 AB']  
X:1
L:1/8
M:4/4
K:A
 AB |"A" cBcB A2 EA |"D" FEFA"E" B2 AB |"A" cBAe"D" fecA |"E" B4 B2 AB |"A" cBcB A2 EA | 
"D" FEFA"E" B2 AB |"A" cBAe"D" fecA |"E" B4"A" A2 :| AB |"A" c2 cd e2 ce |"D" fefg a2 AB | 
"A" cBce"D" fecA |"E" B4 B2 AB |"A" c2 cd e2 ce |"D" fefg a2 AB |"A" cBce"D" fecA | 
"E" B4"A" A2 AB |"A" c2 cd e2 ce |"D" fefg a2 AB |"A" cBce"D" fecA |"E" B4 B2 AB |"A" cBcB A2 EA | 
"D" FEFA"E" B2 AB |"A" cBAe"D" fecA |"E" B4"A" A2 |]  