Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:4/4
K:D
['A2 dB', 'FA A2']  
X:1
L:1/8
M:4/4
K:D
 FAAB A2 dB | AFDE FE E2 | FAAF A2 dB | AFEG FD D2 :| FA A2 BAdA | FAdA BE E2 | FA A2 BAdB | 
 AFEG FD D2 | FAdA BAda | FAda BE E2 | dcBA BcdB | AFEG FD D2 ||  