Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
Q:1/2=90
M:4/4
K:F
['FGAB A2', 'F4 FGAF D2 D2 EFGE C2 C2', 'B FDE', 'f fdB fg_a |{a} g3 g2 g']  
X:1
L:1/8
Q:1/2=90
M:4/4
K:F
|: FGAB A2 GF | d2 cB A2 GF | GABc d2 gd | cAGF GEDC | FGAB A2 Bc | defg f2 ed | c2 fd c2 Bd | 
 cBAG F4 :: FGAF D2 D2 | EFGE C2 C2 | FGAB c2 de | fgab g2 fe | fafd egec | dfdB B2 AG | 
 c2 fd c2 Bd | cBAG F4 ::[M:6/8][K:Bb][Q:3/8=90] B | FDE F2 B | FDE F2 B | cec BdB | cAF F2 B | 
 FDE F2 B | FDE Ffe | dcB FBA | B2 B, B,2 :: f | fdB fg_a |{a} g3 g2 g | gec gab | b3 a2 g | 
 fbf dfd | ege dfe | dcB FBA | B2 B, B,2 :|  