Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:4/4
K:Bmin
['', 'd<B f>B F<B', 'f/e/d/c/ c<d']  
X:1
L:1/8
M:4/4
K:Bmin
 B>c |: d<B f>B F<B B>c | d>e f/e/d/c/ c<d (3ABc | d<B f>B F<B B>d | e<g f>e d<B B>c | 
 d<B f>B F<B B>c | d>B f/e/d/c/ d2 (3ABc |1 B<d c<e d<f e<g | f>g f/e/d/c/ c<d B>c :|2 
 (3Bcd (3cde (3def (3efg | f>g f/e/d/c/ d2 B>f |: b>f g>e f>d e>c | d>f f/e/d/c/ c<d A>f | 
 b>f g>e f>d e>c | d>f f/e/d/c/ c<d B>f | b>f g>e f>d e>c | d>f f/e/d/c/ c<d (3ABc | 
 (3Bcd (3cde (3def (3efg |1 f>g f/e/d/c/ c<d B>f :|2 f>g f/e/d/c/ (3dcB (3cBA | B4 ||  