Reply to Legal Question - playing out Bootlegs and Reworks

Hey guys
got a question about playing tracks (especially reworks/bootlegs) in my DJ sets that are not released and nowhere to be bought nor made downloadable by the artist.
am i allowed to "pirate" tracks like these and play them out? or is that illegal?
just to be said, i buy all of my tracks or download them from the official artist's soundcloud-accounts or sites, i never play any pirated music.

talking about tracks like for example this:
https://soundcloud.com/adriatique/major-lazer-get-free

any advice appreciated