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
['FG A2 B3 d', 'D4 [fA]4 [gB]4 ecBA dAGF GABG AGFE']  
X:1
L:1/8
M:4/4
K:D
 FG A2 B3 d | eABc d2 ef | g3 g fedf | ecBA BA G2 | FG A2 B3 d | ecef g3 g | fedA BcdF | E4 D4 :| 
 [fA]4 [gB]4 | ecBA dAGF | GABG AGFE | EFED D4 | FG A2 Bc d2 | efgf f3 a | g3 b agfe | efed d4 :|  