Develop a tune according to the designated alphabetic musical pattern and the provided melody.
X:1
L:1/8
M:2/4
K:Bmin
['a2 a>g gf']  
X:1
L:1/8
M:2/4
K:Bmin
|:"Bm" BB/d/"F7" cc/e/ |"Bm" dd"Em" e2 |"F7" f>e dc |"Bm" BF B2 :|"A7" a2 a>g |"D" gf f/^e/f/g/ | 
"A7" fe e/^d/e/f/ |"D" ed A2 |"A7" a2 a>g |"D" gf f/e/d/c/ |"Bm" BB/c/"Em" de |"F7" f2 z2 |: 
[K:B]"B" Md z"F7" Me z |"B" df f/d/B |"F7" ce e/c/A |1,3"B" B/c/d/e/ f2 :|2,4"B" Bd B2 :|  