Compose a piece using the specified musical pattern based on the alphabet notation and provided melodic motif.
X:1
L:1/8
M:2/2
K:Amix
['B2 A2']  
X:1
L:1/8
M:2/2
K:Amix
|:"A" ceea"D" fa"A"ea |"D" fa"A"eg"Bm" f2"E7" B2 |"A" ceea"D" fa"A"ea |"D" fe"A"ac"E7" B2"A" A2 :: 
"A" ceeA cAec |"Bm" dffB dBfB |"A" ceeA cAec |"D" df"A"ce"E7" B2"A" A2 ::"A" ceea"D" fa"A"ea | 
"D" fa"A"eg"Bm" f2"E7" B2 |"A" ceea"D" fa"A"eg |"D" fa"A"ec"E7" B2"A" A2 ::"A" ceAe cAec | 
"Bm" dfBf dBfB |"A" ceAe cAec |"D" fd"A"ec"E7" B2"A" A2 :|  