RJDJ Takes Me Into The Rainbow Vein

Last week I noted the release of Bloom, Brian Eno’s first generative music iPhone app, which — to say the least — is beautifully done. Less accessible, perhaps, than the anthropomorphic charm of the lively Electroplankton, but as duly hypnotic and engaging as you would expect. It’s safe to say, though, that less than a week out of the gate, Bloom’s stint as the iPhone’s musical vanguard has been lapped, beat, and trounced by an app that, under the right conditions, could herald a minor audio revolution.

That app is RJDJ, from what appears to be a team of mad European sonic scientists with a good amount of credibility behind them: team co-founder Michael Breidenbruecker was one of the original staff behind last.fm before its $280 million sale to CBS, who explains that the idea for the app had actually come previous to that company’s founding, but needed the near decade of technological progression to catch up to his foresight.

Then what is RJDJ? Pick apart the acronym — Reality Jockey, as much as Disc Jockey– and it shifts a bit more into focus: it’s a compilation-album-like framework divided into song-like “scenes” (each with its own cover art and individual composer), but as opposed to passively listening to each, RJDJ acts as a reality-altering real-time audio processor that modifies and enhances your surroundings.

Frank Barknecht’s Gridwalker, for instance, generates harmonious bleeps not entirely far off from Eno’s Bloom, but modifies their intensity based on the volume of the input. Sit quietly and Gridwalker slowly drips out its subtle tones, but move into a noisy crowd and it responds in kind with a more hyper pitched composition.

What’s genuinely surprising is just how potent its comparatively mild hallucinogenic powers are, particularly the ‘scene’ from New Zealander (and former Sidhe staffer!) Damian Stewart. I’m (mostly) sure it’s not just the latent techno-hippie in me that’s suddenly shot into full bloom, but taking it for a test drive with a late night cigarette break was a revelation: his ‘Eargasm’ transformed every exhale into a glittering swirl of reverberating air and distant suburban dog barks into sudden colorful bursts. Essentially, if you’ve ever wanted to live directly inside that warm nostalgic analog echo that molasses-drips from every Boards of Canada album, your magic key is a $2.99 App Store download away, as witnessed by this demo video.

Beyond that mood altering gimmickry, though, the company’s intentions are as noble as they are lofty. Apart from the six scenes that come with the first RJDJ ‘album,’ the group has at least 10 more waiting in the wings for both free and paid future release. Interestingly, not all are simple sonic modifiers — many will introduce motion-controlled elements like turntable scratches, what appears to be a bit Generations-esque audio-ping-pong game, and phase shifting ala Reich.

The company fully intends to get new artists in on the aural action as well, hoping to evolve RJDJ from proof of concept into a true platform for new audio experiences, somewhat similar to how Harmonix is challenging the idea of passively listening to a band’s music as opposed to participating in it through Rock Band or Phase. As intoxicated as I currently am with the app, it’s admittedly too early to tell whether the company’s “sprints” will continue to churn out scenes as magical as their initial release, but even half as good would be 100% better than what we’ve never heard before.


Join the discussion and tell us your opinion.

October 15, 2008 at 9:13 am

So I rushed to the store to grab this this evening, only to find out that it doesn’t work with the iPod Touch, only the iPhone 🙁 I hope they sort this out sometime soon. I love Bloom btw. It’s great for midnight strolls around the park.

October 16, 2008 at 11:28 am


thanks for your comments about my scene Eargasm – the ‘warm nostalgic analogic echo’ sound is exactly what i was going for. it’s great when you make something weird or trippy and people actually understand it…

and yeah, i did used to work for Sidhe. at the time i was – and possible still am – the only New Zealander who knew how to make a PlayStation2 boot from a CD. useless knowledge? you bet 🙂


frank barknecht
October 16, 2008 at 1:48 pm

@Johnny: We’re working on getting RjDj to run on 2nd generation iPhones, but if you have an older one: it’s missing a microphone input, so probably no luck here. 🙁

And Brandon: Thanks for this nice review, which I think really hit the nail on the head in describing what RjDj is trying to achieve.

November 24, 2008 at 9:32 pm

you hit the nail on the head indeed. I find Boards of Canada great music to work to. Now I’m working immersed in Damian’s Noia scene

November 25, 2008 at 12:24 pm

thx for the review – was about to download bloom, but does brian eno really need more $$? trying rjdj first.

November 25, 2008 at 12:32 pm

Aya: Bloom’s still basically worth the few dollars, but it’s sunk quickly to page 5 or so, whereas RJDJ’s stayed at page one since.

Also, nice work on Shadows Never Sleep, which I think I’ve neglected to ever mention ’round here.

Free trip into the rainbow vein: reality-enhancing iPhone app RjDj free with social update | VENUS PATROL
October 6, 2012 at 6:21 pm

[…] RjDj then? Allow me to cut and paste a bit from my pre-Offworld blog post: Pick apart the acronym — Reality Jockey, as much as Disc Jockey– and it shifts a bit more into […]