The base is original from the producer (chords and melodies), but is complemented with elements that complement the song that come from samplepacks, usually, vocal chops, guitars, wobbles sections, glitch effects. It is the standard in which most of producers work, in a project you will find MIDI files made by the producer, but also melodic loops.
Great Melody and Bassline.
Sylenth1 and Serum were used on this track.
Instrument Synth Loop
Sample pack Sounds of KSHMR Vol. 3
Loop name KSHMR_Synth_Loop_12_120_F#m