That's EDM, that's another game. They play other people's songs, remixes of other peoples songs etc during their sets. It's not like Kendrick could drop 2 singles and for the rest of the show cover 20 songs by different artists. Of course the big dudes have discographies but in general..
Before Drake did it
This is the set of a dude with a pretty solid discography himself.
0:39: DJ SS - Respect to the Following
03:08: Lennie De Ice - We Are I.E.
04:23: Bicep - Nova
06:40: Schatrax - Misspent Years
08:04: Real Lies - North Circular
11:10: The Durutti Column - Otis
13:29: Paleface - Do You Mind (feat. Kyla) (Crazy Cousinz Remix)
16:37: Midland - Reflex
17:50: DJ Wire - Believe Me
19:35: Teebone - Fly Bi (feat. MC Sparks & MC Kie)
22:07: Operator & Baffled - Things Are Never
24:05: New Horizons - Find the Path (In Your Mind)
25:36:
Jamie xx - Sleep Sound (w/ Mike Sinner intervew acapella) 28:30: Freeez - I.O.U. (Ultimate Dub Club Mix)
29:30:
Jamie xx - Girl 31:26: London Posse - How's Life in London
35:41: Wiley & Riko - Lethal B Diss
37:35: XTC - Functions on the Low
39:23: Ruff Sqwad - Your Love Feels
41:15: Wiley - Gangsters
43:10: DJ SS - Black (feat. MC Power) (VIP Mix)
45:10: Urban Jungle - Back in the Days (Sexy Ladys Mix)
47:03: Nookie - Only You
48:45:
Jamie xx - All Under One Roof Raving
so for about one hour he only played 3 of his own songs.