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EWIS is a Web MIDI app that let you trigger chords and play on top of them using your EWI or similar wind controller. There is a live version running at https://ewis.netlify.com/ -- but note that this app may change at any time, so don't count on it for your live performances. I may publish versioned URLs if this is of interest to people. The source code can be found here.

This app is developed by bep and powered by Hugo, Vue and WebMIDI.

Demo

The violin patch in the video above is the SWAM Violin from AudioModeling, the synth pad for the chords comes from the Alchemy synth in MainStage 3.

It is played with an Akai EWI USB wind controller with the "thumb up" controller mapped to CC 5 (portamento, very importamt on Violin) and "thumb down" to CC 64 (sustain, to trigger a new chord seuence).

How to Use

You need:

• An EWI or similar breath controller.
• A "breath friendly" synth or two. I recommend Magellan on iOS (it is available for both iPad and iPhone) with mkirino01's great, free patches. It has two synth engines, so you can use one for the lead and the second for a pad type of sound for the chords.
• A browser that supports Web MIDI. On IOS (e.g. iPad) you need to install Web MIDI Browser . On macOS, Chrome works great (Safari does not).

I have tested this on both macOS (in both Logic X and MainStage) and on IOS (using the Magellan synth running on an iPad Air) with an Akai EWI USB.

I have the "thumb bend down" mapped to CC 64 (sustain; see the CC Toggle setting below), which is what I use to trigger a new chord sequence with a single tap. This plays-and-holds up to the number of notes configured by the Polyphony setting (see below) with velocity matching the breath.

Settings

Build From Source

You need Hugo installed. Then you can just git clone https://github.com/bep/ewis.git and run hugo server.

If you want to develop and test your tweaks on an iPad, you may want a public URL for your development server. One way would be to use ngrok and then start your server with:

hugo server --liveReloadPort=443 --baseURL=https://[your-id].ngrok.io --appendPort=false