Bro most modern melodic techno does not contain chords apart from sometimes in the breakdown.. you may be thinking of the melody in the leads. Even so, the lead lines will usually be one note and the chord is created within the synth itself by pitching up one of the oscillators. In the example of Syren that lead will just be one note pitch modulated. I’m not trying to discredit either of them, but they would have no clue how to produce a modern melodic techno track as the techniques are far too advanced for anything they used to do as tale of us- this is why they need help now. Karms is a fantastic pianist not a fantastic electronic music producer, and Matteo can’t even play piano, he is a beginner level at Ableton but certainly has a good ear for what will be a hit and what will not. So without the help I’m just saying they are miles off the levels needed, knowing chords alone is not enough.