Construct a musical arrangement that blends the supplied motif while maintaining the specified alphabetical order.
X:1
L:1/8
M:2/2
K:Bmin
['f2 Bc dBfB cAec', 'BcdB cAec', 'aecA Baga fgef dfec dB']  
X:1
L:1/8
M:2/2
K:Bmin
 e | f2 Bc dBfB | cAec aecA |1 f2 Bc dBfB | cAec dB B :|2 BcdB cdea | fdec dB B |] c | Bbfd BcdB | 
 cAec aecA | Bbfd BcdB | cAec dBBc || Bbfd BcdB | cAcA aecA | Baga fgef | dfec dB B |]  