Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['d/B/ A2 AB A2 FA BFAF GFED', '', 'fgaf g2']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 d/B/ | A2 AB A2 FA | BFAF GFED | (3FED FD ADFD | Bdeg fdd :| e |: fgaf g2 ef | gfed cA A2 | 
 fgaf g2 fg | (3aba ge fd d2 | fgaf g2 ef | gfed cA A2 | B3 d cdec | d2 eg fd d2 :|  