Thx, dear 
I was more thinking of some artist’s vision shaping the future, not really the artist themselves.
Like, a perception, a projection is made public / set free and the crowd is making it is own.
In such way, the artist doesn’t really have control on what they unleashed, and they might well spent the rest of their life chasing this momentum…
utilising four-part harmony theory to support Trip Hop melody lines in a mellifluous fashion whilst maintaining a fresh attitude, could be possibly futuristic from some perspectives.
it might or might not be easy to come up with a cool melody line that makes sense yet doesn’t dance all over the place. but to then complement that line with another one or two concurrent lines that interweave and interplay enjoyably is pretty cool - and potentially futuristic… or at least, fairly cinematic 
new styles of beats either reinterpreted or newly sequenced are often a strong indicator of difference between timezones.
Future always sounds like what we imagine it sounding it like today. In the 90s pretty much nobody would have thought that in the 2010s slowing down 80s synth funk or speeding up pop songs and anime openings would even count as music, let alone spawn their own subgenres and subcultures.
For a less outlandish example, the 90s dance scene probably didn’t think that in 2010s the most popular electronic dance music genre would (at least for a while) basicaly be random honks over mid-tempo 4/4 jackhammer beats. The copyright lawyers of the era probably dreams of hip-hop stripped off all sampling and reduced to an ultra-minimalistic synthetic style, but Trap was never an inevitability.
It doesn’t even take 20 years to be completely myopic about what is around in the corner. Nobody in the early 2000s thought that there would be very soon commercial boom centered around basicaly slowed-down, shuffled Neurofunk with jarring trance/house sections glued on top. And at the peak of the Dubstep boom nobody probably thought that soon producers would turn their eyes several decades backwards and Synthwave would boom, and suddenly the future would sound just like a more polished version of the past.
Our perspective is limited, the future is entirely inscrutable. For all we know music in the 2030s could be acoustic after a solar flare has wiped out all the electronics. The future sounds exactly like what you think it will sound like, and it will sound like nothing you imagined once it has arrived.
If robots forced me at gunpoint to speculate about the Next Big Thing I would say it would be something like Footwork or other genre with comparatively unusual beats. EDM and Dubstep succesfully assaulted the pop sensibilities built around melodies and harmonies with their near amelodic, borderline unharmonic krrrzzts, wub wubs, toots and bwäääääps. The 4/4 and syncopated kick-snare-kick-snare are the next ones that are gonna get vaporized. Or then not.
somehow this track seems incredibly meaningful … or perhaps the buildup to the chorus rocks my world … or the background synths in verse 2 …
and the lyrics with the ironic rephrasing at the completing verse outro …
One step ahead of you
stay in motion, keep an open mind
Love is a race won by two
Your emotion, my solitude
If I stop I could lose my head
So I’m losing you instead
Either way I’m confused
You slow me down, what can I do?
There’s one particular way I have to choose
One step ahead of you
Always someone makes it hard to move
She says, Boy I want you to stay
But I save it all for another day
If I stop I could lose my head
But I’m ready for romance
Either way I’m confused
I don’t know what I’m supposed to do
I can only stay
One step ahead of you
Da, da, da, da, da
Da, da, da, da
Da, da, da, da
Da, da, da, dumb
Stop, I confess sometimes
I don’t know where I’m going
Part of me stays with you,
I’m slowing down, what can I do
It’s hard to stay one step ahead of you
(Uh huh)
One step ahead of you
Time is running out
Catching up with you
One step ahead of you
When I hold you close
Can I really lose?
One step ahead
Only one step ahead
She’s one step ahead of you
Future in music has little to do with the specific sound and more to do with the harmony and composition. Mostly with harmony. Gear dos not matter.
True. Well, I think the sounds are and will remain important too, but definitely composition, and it definitely won’t rely on gear.
Hehe so True
Always have always will… rely on gear that is. Take the electric guitar for example. The gear is actually what makes the innovation possible
Sure, but it’s not a geeky matter of a “Yahama H3944” vs a “Kurzweil T2000” or whatever, in my opinion. A synth sounds like a synth at this point in time, unless you’re a geek like us, and the truly innovative sound design/compositions won’t rely on the miniscule differences between modern day synths (was what I meant with my comment) - wavetable vs analog sinewave with waveshaper and this and that filter, it’s just not really a massive difference. Potentially opening a can of worms here, and I know synths sound differently obviously, but by and large, they’re kind of the same thing.
Synths are slowly evolving, just like the piano and guitar have done before. (In that sense, even 100 years ago, development was dependent on technological advances)
Obviously it’s people who create change, not technology…
People are slower to change than technology is, perhaps, which is why we have so many analog synths about these days, but in time, new and exciting tech will allow smart people to make new and exciting music. I hope.
Electric guitar? What electric guitar??
Now this is nearly a philosophical question … futuristic music, what could this be?
I assume that you are not asking about making amazing music for science fiction movies 
My thoughts are …
Is it the “uncommon”, the “unexpected”, “something, which has never been heard before” … ?
I think that the music made with the very first electronic instruments has been received to be very futuristic, despite the fact that the musicians played quite traditional tunes.
Imagine the days, as an artist was standing in front of a wooden box with two metallic antennas extruded, waving his hands in free air, and generating a violine like sound … the year was 1922 … and Leon Termin performed on his Theremin … many years later … exactly that instrument was used for the lead voice of the Star Trek theme? I guess, most people asked would have answered, yes, this is futuristic music.
Or would it be creating new sounds and new methods of composing like Karl-Heinz Stockhausen, or like Morton Subotnick, which broke with many conventions and used new technologies of their time and used known technology in unconventional ways?
Or is it JMJ with his LASER-harp, controlling a synth in a spectacular performance?
BUT …
My question would be, is to create “futuristic music” a goal worth to chase? I would say no, if this would be the main intention.
I would say to create “good music” should be the most important goal. This would, to some extend, include to excel at the instruments used. If electronic instruments and devices are used by creative artists, futuristic music will be created every now and then, because creativity can lead to places, where others didn’t go before. Maybe a successful approach could be, not to copy others, but have the courage to be and express yourself.
IMO electronic instruments have two major differences compared to mechanical instruments of the past, which are:
We have to understand and use those features … we can play a synth as a preset-machine, but there is more to it, if we use all the knobs available in an artistic way.
But at the end, the instruments and the gear are tools. IMO we can create futuristic music with two spoons as well, as with an impressive modular synthesizer. At the end, it’s only the artist, who creates, not the tools
Whatever it is it’ll have to be light so it doesn’t weigh down my hovercraft. But one thing is for sure, everyone will agree that the Prophet 5 sounded better and the OBxa was deeper.
And it’ll cost you your mom and dads weight in soylent green.
MORE THEREMINS PLEASE.
There’s also a most excellent documentary that shows what music will be like in the future: