Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:2/4
K:D
['FAGE FAAG (3FGA BG FDDF GFEF GABd', 'BGGA FGAB cdef eBdc A2 de fddf']  
X:1
L:1/8
M:2/4
K:D
 FAGE FAAG | (3FGA BG FDDF | GFEF GABd | ecdB cAGE | FAGE FAAG | (3FGA BG FDDF | GFEF GABd |1 
 cAGE D2 AG :|2 cABc d3 g || fded cAAB | =cedc BGGA | FGAB cdef | eBdc A2 de | fddf e=cce | 
 dBed cAAF | (3EFG AB cdef |1 afge dAde :|2 afge d2 AG ||  