Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/4
M:4/4
K:Bb
['C C']  
X:1
L:1/4
M:4/4
K:Bb
 D | D D/D/ D D | D F F E | C C C C | C D E2 | B, D B, D | B, D F F | B B G E | F F B, D/D/ | 
 D D D D | D F F E | C C C C | C D E2 | B, D B,/B,/ D | B, D F E/E/ | B/B/ B G/G/ E | F F B, ||  