Reply to What gear can i add to my DJ setup for creat/play music?

Hi everybody,
i have a Kontrol S2 + traktor for mix. But since few days , i would like add some improvisation in my mix (like some bass i can play, or some synth, ect...)
What gear i need to buy for that? i read a lot on internet (like Ableton live+ midi Keyboard, Maschine, Push, ect...) but now, i dont really know what i need.
What gear/soft i need for work with Traktor and my S2?
Thanks