Develop a musical arrangement using the specified sequence in alphabetic representation and the provided motif.
X:1
L:1/8
M:2/2
K:C
['C3 (c c)GEG F(DD)B/c/ def(d c)GEG cdec', 'ecgc acgc']  
X:1
L:1/8
M:2/2
K:C
 C3 (c c)GEG | F(DD)B/c/ def(d | c)GEG cdec | eaTgf .e(cc) :| g | ecgc acgc | (fd)ad bdad | 
 ecgc acgc | faTgf ecc(g | ec)gc acgc | fede (fga).f | AcBd cedf | eaTgf e(cc) |]  