Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
Q:1/4=120
M:2/2
K:D
['A, D2 FD CDB,D A,DFG AGFE DAFA', 'G2 BG']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:D
 A, | D2 FD CDB,D | A,DFG AGFE | DAFA DAFA | gfed dcBA | d2 df ecac | BcdB AFDF | G2 BG FAdB | 
 AGFE D2 |: g2 | fdaf ecAc | BGdB AFDF | G2 BG FAdf | gfed dcBA | d2 df ecac | BcdB AFDF |1 
 G2 BG FAdB | AGFE D2 :|2 gbgb fagb | agfe d2 |]  