Are You Ready to Hear a Copper Heart Played with Dry Ice Fed Through to an Octatrack with Theremin Accompaniment?


Are you ready to hear a copper heart played with dry ice fed through to an Octatrack with Theremin accompaniment? Well here you go.

Video of live concert footage: Concréte Mixer IV Denver - Co2 Copper Heart vs Octatrack vs Theremin with Thomas Lundy and Victoria Lundy. Recorded live at the Concréte Mixer IV concert at the Walnut Room in Denver on January 30th, 2015. I am live sampling the Copper Heart with an Elektron Octatrack and providing drum elements, Victoria Lunday is playing Theremin. The only audio source for Octatrack other than drum samples. Shot with GoPro with audio from Zoom H2n recording ambient room sound.

Live Concert Footage: Concréte Mixer IV Denver - Co2 Copper Heart vs Octatrack vs Theremin from Mark Mosher on Vimeo.

Live Concert with Streaming Audio: Concréte Mixer IV at Walnut Room Denver, Friday Jan 30th, 9pm

I am excited to be returning for my fourth Concréte Mixer show. At this event, I will use an Octatrack dynamic sampler to incorporate real-time audio output from other musicians at the event to create expressive "instruments" on-the-fly. I will also perform a solo piece manipulating field recordings with infrared AudioCube controllers. To accompany the music and sound for the show, I will also be providing interactive visuals with live camera input.

Friday January 305h, 9pm
The Walnut Room, Denver
3131 Walnut St, Denver, CO
$8 advance / $10 at the door


RSVP on FB Group:

We are going to be STREAMING the show here if the internet connection is solid enough:


“I can feel, as if it were quivering in my memory, the whole drama of these last three years of experimentation […] The miracle of concrete music is […] things begin to speak by themselves, as if they were bringing a message from a world unknown to us and outside us.”
– Pierre Schaeffer, “In Search of a Concrete Music”

The Walnut Room in Denver has been a loyal supporter of experimental and ambient artists, and is a beautiful venue with superior sound and the best audio engineers in town. On January 30, five artists from different realms of performance and composition will convene at the Walnut Room to present an evening of acoustic, analog electronic and digital noises, sound effects and tonal music inspired by the musique concréte form and philosophy. Mark Mosher will create expressive sample-based “instruments” on-the-fly, building up his instruments in real-time by sampling his own synthesizers as well as capturing audio from contact mics, and output from the other artists. To compliment the music and sound, Mark will also project interactive visuals. He will be joined by electronic musicians Rod Tanaka and Mike Metlay, theremin artist Victoria Lundy, Concréte Mixer curator Thomas Lundy, and sound designer and musician Rick Reid all performing solo and interactive work.


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@PandaBear performs "Boys Latin" Using Two Elektron Octatracks on @Fallontonight


Below is a video of Panda Bear performing the song  "Boys Latin" on The Tonight Show with Jimmy Fallon. If you look close in the beginning of the video you can see he’s rocking two Elektron Octatracks. This song is from his new album Panda Bear Meets the Grim Reaper.

Watch video:

 More on Panda Bear here and here

New Short Film "Headlights" An Original Psychedelic Short Film with Synthesized Score + Vimeo Channels

New Short Film

To start the new year off with a bang I've released a brand new film "Headlights" - An Original Psychedelic Short Film with Synthesized Score.

Headlights - An Original Psychedelic Short Film with Synthesized Score from Mark Mosher on Vimeo.


Making Of

If you would like to geek out and see how I used a single slot and single original preset on the Nord Lead 4 to record the score in a single pass check out the "making of" the soundtrack film watch this.

The Making of Headlights Soundtrack from Mark Mosher on Vimeo.

More Vimeo Channels

If you dig these videos, you might want to swing by my other channels on Vimeo. If you want to keep up with these channels, use the "Follow me" button on pages on Vimeo.


Mark Mosher
Boulder, CO

Ring in the New Year with the New Years Eve Concert Live Streaming Event


Members from the community from all over the world be be performing live streaming concerts on January 31st.

Tune in here

Times on poster are GMT, but if you visit this page you’ll see the times translated to your local time

Live chat room is here

Hands-On Review of Nord Lead 4 v1.30 OS Update

Photo Dec 28, 5 46 37 PM

On December 23rd, 2014, Nord released an OS update for the Lead 4 Synthesizer bringing it to version 1.30.

Download the update from here

I applied the update to my Nord Lead 4 yesterday and got some hands-on time using the new OS. In this article I'll offer some first impressions followed by the comprehensive list from Nord on what's new with annotated notes.


Mark Mosher
Synthesist, Boulder, CO 


Innovator's Paradox

Before I talk about the update, I do want to mention that I was really hoping the Lead 4 would inherit some features from its newer little sibling the Nord Lead A1.

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Izotope Iris 2 Hands-On Review, Tips, Early Sound Design Experiment Videos, and First Impressions


I just started experimenting with iZotope’s Iris 2. Wow! Iris 2 wins the award for most improved virtual instrument for me in 2014!

While Iris 1 focused on interesting ways to manipulate samples using photoshop-like editing to do spectral filtering along the timeline, it was lacking on the automation and sound shaping side for me. Things have certainly changed for the better in Iris 2!

In this article I’ll offer a hands-on review of the new features, offer some tips, show you some early sound design experiment videos as well as offer first impressions on Iris2.

There are plenty of Iris 1 reviews and videos out there so I’m not going to cover that ground. I also won’t cover the Spectogram editor either. I do offer some links to video tutorials at this bottom or the article if you want to see these features in action.


Mark Mosher
Synthesist, Boulder, CO


In a nutshell, Iris is a sample-based synthesizer with four audio pool layers that can contain your own samples or samples from the factory library. The spectrogram display allows you to manipulate edit the audio spectrum across the timeline. Iris 1 was released in April of 2012. Version 2 was released in November of 2014.


You can play tune and play samples back like a classic sampler in various modes that allow you to play samples forward, revers, looped, and triggering one-shots. Radius-RT mode allows for real-time pitch shifting. In other words, in Radius-RT mode, playing the sample higher up the keyboard changes the samples pitch but not the speed as it would in the other modes.


Modulation and Automation with Visual Feedback

Iris 2 now has 5 LFOs, 5 ADSRs, 8 Macro knob mappings, MIDI mappings (mod wheel, aftertouch …). There are over 100 Modulatable parameters now!

The new modulation system is killer with simple drag-n-drop style mapping (you can also use right-click). Once you drop you can scale the level of modulation on the target circle. A ring will also appear on the target allowing you to further manipulate depth. You get visual feedback in real-time as parameters are modulated.


In the illustration above I mapped LFO2 and Macro Knob 1 to modulate LFO1s rate.  You can also modulate the shape of an LFO.

Tip: Envelope 5 is mapped to master gain by default making it the AMP ADSR. You can of course repurpose it, but go to ENV to make tweaks on factory presets.



In addition to 4 master effects that were in Iris 1, there are now 4 insert effects per sample pool. All of the parameters can be modulate and automated. iZotope did a great job implementing this so there are little or no artifacts.

Continue reading "Izotope Iris 2 Hands-On Review, Tips, Early Sound Design Experiment Videos, and First Impressions" »