Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:Bmin
['B3 d e3 f', 'f B3 fBa^g fcBc f2']  
X:1
L:1/8
M:4/4
K:Bmin
 B3 d e3 f | gfef edcA | B2 (3Bcd e2 fd | edfd edcd | B3 d e3 f | gfeg f3 g | a d3 afef | 
 d2 fd edcA | B3 d e3 f | gfef edcA | B2 (3Bcd e f3 | e g3 f b3 | BA (3Bcd e2 ef | gfeg f2 fg | 
 a d3 afef | gefg acde || f B3 fBa^g | fcBc f2 aa | fd(3ddd f2 f^g | afec dfa^g | f B3 fBa^g | 
 fcBc f2 a^g | f d3 f2 f^g | afec aba^g | f B3 fBa^g | fcBc f2 a^g | fdcd f2 f^g | afec dfa^g | 
 f B3 fBa^g | fcBc f2 a^g | fdef edcA | B2 fd edcd ||  