You’re now approved to DJ with your iPhone. Or at least the app is. I’m not sure if I can take credit for getting Apple’s attention, but Apple has approved the TouchDJ application from Amidio. That’s big news, partly because developer Amidio has consistently been at the forefront of musical development on the platform, including their Noise.io synth and wild hexagonal JR Hexatone Pro.

This also is a big blog to the theory that Apple is intentionally blocking DJ apps — and a big boon to the theory that the App Store is just plain clogged, even if it may be disproportionately affecting more sophisticated applications.

Features in the release:

• “Visual mixing,” with a clever interface that uses overlays atop side-by-side waveform views
• Pre-listening using a special left/right adapter
• Faux vinyl and spin effects
• Real-time scratching, looping, positioning, EQ, effects, re-pitching
• Onboard sampler with 3 WAV sample slots, recording from the mic
• Uses a separate MP3 library with companion apps, since it isn’t possible to DJ from the library you sync from iTunes

Now, to me, that last point is a fairly significant one. You have to load tracks you wish to DJ separately, in MP3/M4A format. And I’m sure that this will start various debates about whether you’d want to DJ on your iPhone in the first place. But don’t look at me — I just work here. I’d be remiss if I started out the week talking about apps stuck in iPhone limbo, only to ignore them immediately becoming available. And I will say, Amidio is one of the smartest mobile music developers out there, so it’s worth checking out the range of what they’re doing.

Whether petitions and news stories did help this app to get to the top of the queue or not, I have no idea. I think maybe I’ll start running screaming headlines with things I want in them, if only for good luck.

Tomorrow on CDM: “You Know What Annoys Me? The Fact That We Don’t Have Unicorns. Magic Unicorns. Who Speak OSC.”

It’s drumming, the multi-player game. The Drummer is an open-source application for the Nintendo DS handheld, developed by Andrea Bianchi and Woon Seung Yeo and presented alongside a paper earlier this year at the NIME Conference (The International Conference on New Interfaces for Musical Expression). As with any Nintendo homebrew software, you’ll need a special DS cartridge capable of loading software from flash memory – though if this app were developed more, it could make a terrific DSi app.

The idea is this: while making a handheld game system into an instrument, why not take advantage of its networking features? Grab a friend (or friends) with the Nintendo DS, whip up a drum kit that’s to your liking, then play along.

Oddly, while we live in a networked, Internet age, the client-server model rarely gets applied to music.

The novelty of the iPhone or [your favorite device here] may fade. But part of what matters in mobile design is thinking about how to create interfaces and uses that can scale to the size of your palm. That can mean embracing radical simplicity, and reducing an interactive, digital musical object down to its essential noise-making functions. In acoustic instrument design, that means economizing sound production in a form. In the digital world, it means finding the interactive role you’d want to bring with you onstage, in the length roughly equivalent your fingertips to your wrist.

I’m a few weeks overdue actually writing about it, but one design I really admire is Star6, developed by Jason Forrest and Agile Partners. There are no awkward, gimmicky emulations of hardware interfaces here; it’s clear this was an interface that was illustrated in two-dimensions. It has funky nerdster chic color combos, with neon pink atop wood grain. It demonstrates that, in the space of a grid, you can fit triangles. It makes use of computer wifi capability to easily load samples without mucking around with over-designed clients – or record right on the iPhone. And it’s – surprisingly – one of the few apps to make heavy use of the accelerometer, which means rather than looking like you’re trying to text message someone, you can move it around. There’s a “grain” mode so that you can randomize sounds and not have everything synced all the time. I also enjoy the “reset” button. These are all design decisions that could make sense in more commercial software – and our own home-brewed Max/Pd patches and such, too.

Apparently Agile Partners were also influenced by the brightly-colored, handheld fun of the Buddha Machine, too; see their interview with the creator.

Star6
A lovely lineup of free samples, including the Buddha Machine

It’s not a perfect app (no mobile app really can be – that’s the fun of it), and it doesn’t do everything, but I find Star6’s personality rather irresistible. The real test of all of this is whether you can use it in real music-making. And, while my inbox is full of cheezy bands trying to ride the iPhone wave, I love the offbeat Star6 music launch party from Berlin, as documented in the video below. It ranges from Jason’s own work to Warp Records artist Jackson and ex-Chicks on Speed Kiki Moorse. And there’s a crazy iPhone + banjo + accordion cover of Katy Perry’s “I Kissed a Girl.” There are even some genuinely experimental sounds – not the sort of thing you’d expect at a launch event, sadly. (I wish we could have more of that.)

An Evening With Star6 – Berlin (Compilation) from Star6 on Vimeo.

More on the artists, and some of Star6 creator Jason Forrest’s own unique work:

As you may know, the creators of games like Grand Theft Auto have collaborated with Timbaland to bring a mobile music studio to Sony’s PSP (and later, the iPhone), based on an ambitious free Flash experiment on their Website. Now, it’s my impassioned belief that you shouldn’t need lots of canned loops or celebrity endorsements to make music fun, so normally I might actually run the opposite direction of any story starting with that line. But here’s the surprise: underneath, the app is more powerful than I expected.

I’ve gotten an early preview of the title in person at Rockstar’s offices here in New York, and was also able to grill their developers on geeky details of how the sound engine is put together. A test copy isn’t yet available so I can’t properly review the app, but I am at least able to talk about some of what lies beneath the PSP screens and marketing.

For some time, a select few have known that the Sony PSP’s secret is that it’s a powerful handheld computer, ideal for mobile music. Brilliant-but-underground apps like PSPSEQ and PSP Rhythm capitalized on this potential, but required you hack your PSP in order to run them, because Sony restricts launching non-authorized applications from memory.

Beaterator is the first full-featured app that can be run directly on the PSP. Some people may not look past the fact that it comes from a game company, past its (admittedly) thick layer of marketing glitz and celebrity endorsement. But based on a first look, I believe Beaterator is the most powerful music app ever released through game channels, surpassing in functionality even the recent cult hit Korg DS-10 for the Nintendo DS.

Fans of the Nintendo DS may have been immune to the siren song of Nintendo’s tweaked DSi model. Unfortunately, I have a feeling a bunch of you are about to upgrade your handheld game system. Why? Because the folks at AQ Interactive are doing an upgraded version of the DS-10 software synth for the game platform, now on the DSi. Palm Sounds gets the scoop.

New in this version:

• Twice the analog synths (4 of them, instead of 2)
• Twice the drum machines (8 instead of 4)
• Twice the tracks (12 instead of 6)
• Expanded song mode: programmable track mute, realtime editing (that is, edit parameters inside the song mode

They’re also announcing distribution through retailers. The new features appear to be platform-specific — that is, all this doubling business appears to be thanks to the greater horsepower of the DSi. My guess – though this is unconfirmed – is that if you can get this for the pre-DSi DS, you won’t be able to switch to the “Dual Mode.” The other slight disappointment is that it doesn’t sound as though online features or collaborative features have been enhanced. On the other hand, AQ is promising that they’ll be in brick-and-mortar retailers, not the online-only distribution they had on the original. I’m hopeful that may also mean distribution outside the US — either for an online DSi purchase, perhaps, or for the cartridge. (The DSi still supports physical carts – hence the mention of retailers.)

The best part of all of this, though, is watching Nobuyoshi Sano – the composer/arranger behind Namco games like Ridge Racer and Tekken – do a Steve Jobs keynote impression.

Via Brandon at the best-game-blog Offworld, who notes that in US dollars this represents a $10 discount.