Seq24 on the Pi 3

Yesterday’s Raspberry Jam in Exeter gave an opportunity to briefly demonstrate Seq24 on the Raspberry Pi. I’ve got a Pi-TopCEED desktop and inside this is fitted a small amplifier and speaker. It’s a simple addition but gives me a chance to use sound without trailing wires.

Seq24 is a block-based sequencer. Patterns of notes are entered into blocks and each of these can be triggered with either the mouse or keyboard. As an experiment, I’ve entered parts of Pachelbel’s Canon in D into the blocks so that they can be cued one at a time. I’ve chosen Canon as it’s based on a repeating chord pattern of D, A, Bm, F#m, G, D, G, A over 4 bars.

Any Pi is fast enough to run Seq24 is external MIDI gear, but now that I’ve got a Pi 3 I’ve installed QSynth (which can emulate an external polyphonic sound module and uses SoundFonts) as well as AMSynth, which emulates a classic analogue synthesizer. These both seemed pretty easy to set up once I’d found a GM Sound Font for QSynth.

Cueing different parts of the Canon gives an entirely new mix which certainly adds an interesting perspective on the original music. Hopefully a YouTube clip will appear here soon!

Seq24 Demonstration

Seq24 and two virtual sound generators running on the Pi-TopCEED at Exeter Raspberry Jam.



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