Song one:CaptivAte~裁き~ CaptivAte~Sabaki~ DJ YOSHITAKA feat.A/I
Song two:CaptivAte~誓い~ CaptivAte~Chikai~ A/I
Song three:CaptivAte~浄化~ CaptivAte~Jouka~ A/I
Song four:CaptivAte2~覚醒~ CaptivAte2 ~kakusei~ e-lma
Intro one: IIDX 13 DD main theme
Intro two: IIDX 11 RED ending theme
Intro three: IIDX 15 DJT main theme
those artists are all DJ YOSHITAKA, check
this