Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:3/8=120
M:6/8
K:Emin
['E>GE GEG B>AB', 'B2 B']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:Emin
 B | E>GE GEG | B>AB e2 f | gfe dgB | A>GA BGE | E>GE GEG | B>AB e3 | g>fe dcB | AGF E2 :: B | 
 E>GE B2 B | G>EG B2 B | D>GD A2 G | FDF AGF | E>GE B2 B | GEG e2 f | g>fe dcB | AGF E2 :|  