Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:3/4
K:Bb
['d2 f2 fd ce']  
X:1
L:1/8
M:3/4
K:Bb
 d2 f2 fd | ce g2 f2 | d2 f2 fd | ce A2 B2 | A2 c2 cA | FAGBdc | A2 c2 cA | GB =E2 F2 |]  