Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:6/8
K:D
['ddd def d2 d def eAA ABc', 'f agf agf [df][df][df] [df]2']  
X:1
L:1/8
M:6/8
K:D
 A | ddd def | d2 d def | eAA ABc | e2 A ABc | ddd def | d2 d def | eAA ABc | [df]3- [df]2 :: f | 
 agf agf | [df][df][df] [df]2 g | bag bag | [Ae][Ae][Ae] [Ae]2 f | agf agf | [df][df][df] [df]2 f | 
 edc ABc | [df]3- [df]2 :|  