Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
Q:1/8=250
M:2/4
K:D
['DE FG AG AB =c/B/A dF G2', 'B/A/B cc- c/B/A F2 FB/c/B A2- A/G/A/G/']  
X:1
L:1/8
Q:1/8=250
M:2/4
K:D
 DE FG | AG AB | =c/B/A dF | G2 GF/G/ | EF GA | c=c ^cB | A/F/4G/4A/ c/B/A/F/ |1 D2 D(3E/F/E/ :|2 
 D2 D(3B/c/B/ || A2 AG/A/ | BB- B/A/B | cc- c/B/A | F2 FB/c/B | A2- A/G/A/G/ | BB-B/A/B | ce Bc |1 
 d2 dB :|2 d2 dc/d/ ||  