Develop a musical composition based on the outlined framework and thematic material.
X:1
L:1/8
Q:1/4=140
M:6/4
K:Emin
['B e2 e e>fg f2 f f>ga', 'B2 G/A/ B2 B B>AG d2 D', 'B e2 e e>fg f2 f f>ga', 'G/A/ B2 B B>AG d2 D D2'  
X:1
L:1/8
Q:1/4=140
M:6/4
K:Emin
 B | e2 e e>fg | f2 f f>ga | g>ag f>gf | b2 B B2 || G/A/ | B2 B B>AG | d2 D D2 A/B/ | c2 c c>BA | 
 f2 E E>FG | A>Bc B2 B, | E3- E2 |][M:6/8][K:Emin] B | e2 e e>fg | f2 f f>ga | g>ag f>gf | 
 b2 B B2 || G/A/ | B2 B B>AG | d2 D D2 A/B/ | c2 c c>BA | f2 E E>FG | A>Bc B2 B, | E3- E2 |]  