Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:2/2
K:D
['DFAF GFEF D2 FA dABA F3 A', 'A2 fd d2 gfec dcde fddA dfaf', '', 'GEFG FDFA dABG F2 AF G3 B']  
X:1
L:1/8
M:2/2
K:D
 DFAF GFEF | D2 FA dABA | F3 A G3 B | AGFD A,B,CA, | DFAF GFEF | D2 FA dABA | F3 A G3 B |1 
 AGFD EDDA, :|2 AGFD ED D2 |: fd d2 g2 ag | fedf ec A2 | fd d2 gfec | dcde fddA | dfaf gfeg | 
 fedf ecAF | GABG FAdB |1 AGFD ED D2 :|2 AGFD A,B,CA, ||"^Variations of 1st part" |: DFAF GEFG | 
 FDFA dABG | F2 AF G2 BG | AGFD A,B,CA, | DFAF GEFG | FDFA dABG | F2 AF G3 B | AGFD EF D2 :|  