Generate a composition that blends the designated melodic theme with the particular alphabetical naming of the musical pattern.
X:1
L:1/8
M:4/4
K:Bb
['B2 cc B2 _A>G G2']  
X:1
L:1/8
M:4/4
K:Bb
 B2 | cc B2 _A>G G2 | G>FFF F2 G2 | B2 _A2 C2 D2 | F3 E E2 B2 | cc B2 _A>G G2 | B>FFF F2 G2 | 
 B2 B2 B>BBB | E4 z3 G | F>FFF G2 z _A | BA/A/Bc d2 z d | f2 ed c2 cc | d2 BG F2 z F | 
 F>FFF G2 z A | BA/A/Bc d2 z d | f2 e2 G2 dc | B4 z2 |]  