Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:2/2
K:Dmix
['AG |]: FD (3EFG', 'B cAdB cAGB', 'fdec AGAB c2 cd eaag efge dfed']  
X:1
L:1/8
M:2/2
K:Dmix
 AG |]: FD (3EFG A3 B | cAdB cAGB | Add^c d2 (3efg | fdec dcAG | FD (3EFG A3 B | cAdB cAGB | 
 Addc ABAG |1 EFGE FDDE :|2 EFGE FDDe |: fdeg fdec | Addc Adde | fdeg fdec | AGAB c2 cd | 
 eaag efge | dfed cAGc | Addc ABAG |1 EFGE FDDe :|2 EFGE FDDE |]  