Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:4/4
K:Cmin
['G<G c>d e2 e>g', 'b<cg<c b<c g>a']  
X:1
L:1/8
M:4/4
K:Cmin
 g | G<G c>d e2 e>g | f<bd<f B>c d<B | G<G c>d e2 e>g | f>b g/f/e/d/ c2 c :| g/a/ | 
 b<cg<c b<c g>a | b>gf>b d>Bf>d | b<cg<c b<c g>a | b>gf>d c2 cg/a/ | b<cg<c b<c g>a | 
 b>g f<b d>bf>d | G<G c>d e2 e>g | f>b g/f/e/d/ c2 c ||  