Blue is a hard banging 808 beat. The melody is very simple but never gets boring. The drums a knocking hard and would vibrate in every club.
Special about this beat is that it has only 3 melodic instruments in it. The rest are just drums, bass and fx. Thats all.
This beat is of cause for rapping. Especially for hard rap. It makes really no senseto sing over it, because it has no real melody to it.
We can say it is a good beat. not made for everyone, but for those who like it, its the perfect instrumental for their next song.