Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
Q:1/4=120
M:4/4
K:Gmin
['B D>GB>G d>GB>G C>F A>f F>G (AG/F/)', 'A>f d/c/B/A/ B<G']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:Gmin
"^Strathspey." B | D>GB>G | d>GB>G | C>F A>f F>G (AG/F/) | (D<G) G>B A>c B>d | c>f (cB/A/) B<G G :: 
 (g/a/) | b>gd>g G>dg>b | a>fc>f F>cf>a |1 b>gd>g f<dc>B | A>f d/c/B/A/ B<G G :|2 b>ga>^f g>d=f>c | 
 A>f d/c/B/A/ B<G G |]  