Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:Bb
['(B<G) (G>F) (D<G)']  
X:1
L:1/8
M:4/4
K:Bb
 uc |"Gm" (B<G) (G>F) (D<G) (G>A) | (B<G) (g>a)"Bb" B<c d>c |"Gm" (B<G) (G>F) (D<G) (G>B) | 
"F" A>F F>A c2"D7" d :: c |"Gm" (d<g) (g>f)"Dm" (d<g) (g>f) |"Gm" (d<g) (g>a)"Eb" b>ag>a | 
"Gm" b>g"D7"a>^f"Gm" g>d"Bb"=f>d |"F" c>AF>A c2"D7" d :|  