Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
Q:1/8=140
M:4/4
K:D
['A2 A>B', 'd z a2 a>g f>g a2 b2']  
X:1
L:1/8
Q:1/8=140
M:4/4
K:D
 B | A2 A>B d>e fe | d<B B>A d<B B2 | A2 A>B d>ef>a | b>fa>f e2 d :: z | a2 a>g f>g a2 | 
 b2 b>a g>a b2 | a2 a>f d>ef>a | b>fa>f e2 d :|  