In the style of Laser Harp by JM Jarre on a Vermona '14.
Both waveforms sinewave, set to synch, 18db filter.

I thought I'd have a quick go at this with the Prologue. This is rather in the "inspired by" rather than "recreation of" category; the attack timbre in particular is not there. I suspect layering another timbre for the attack would get it a lot closer; this is not currently a bitimbral patch. This is recorded straight out of the synth with no effects etc. added.

(Please excuse the sloppy playing!)

I have it and honestly I don't think it is the best emulation: it simply doesn't sound correctly in all notes.
The best emulation probably is the one that same Per Kristian made on JD990, but unfortunately it can sound only monophonic, because on JD990 applying the sync is possible only for mono mode and not for poly.
The second unfortunate thing is that there isn't a donwloadble patch of it on Per Kristian site... but just a demo mp3 file.

Another practically perfect Laser Harp patch is by Thomas thhedk made with a Reason synth.
Perhaps this one is the best emulation of Laser Harp sound.
YouTube

Haha ! Inspires me to improve my patch which already sounds 99% like in that video and do the whole song.

This seems hard.

Ok so I have pitch cv going to osc2.
osc2 square to osc1 sync.
osc2 tri to osc1 lin cv in (set to 3)
adsr going to osc1 exp cv in (set to 3,5)
osc1 audio out (square)
env as shown.
different settings on the osc wavelength.

If I actually filtered some of the audio out it got more mellow and less aggressive.

Playing the Xerxes synthesizer laser harp patch 46 with Linnstrument via MPE, animal style.

you played the wrong last note!

Third Rendez Vous cover
with XERXES synthesizer.

Nice harp, but very nice pad.

Laser Harp on Massive X



Elka Synthex preset examples from www.perkristian.net and greatsynthesizers.com were used as reference when recreating the sound in Massive X.
I think the result is pretty close.

u-he Repro 5 with some effects.