Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:2/2
K:D
['dcAF G2 FG', 'a2 ge']  
X:1
L:1/8
M:2/2
K:D
 dcAF G2 FG | Adde fdec | dcAF G2 FG | AFGE FD D2 | dcAF G2 FG | Adde fdec | dcAF G2 FG | 
 AFGE FD D2 || f2 fa gfed | cdef g2 fe | defg a2 ge | a2 ge fdde | f3 a gfed | cdef g2 fe | 
 a2 ge a2 ge | a2 ge fdde ||  