Expressive Piano Synthesizer

Joel K C

Contains adsIn-app purchases

About this app

Expressive Piano Synthesizer is a microtonal, MPE-compatible piano and analog synth designed for highly expressive performance. Play slides, per-note pitch and pressure to shape every note in real time. Ideal for Arabic music, Indian classical, jazz, film scoring pads and modern electronic styles.

This virtual instrument uses a piano-style multidimensional surface, so you can perform MPE and microtonal parts without learning a new layout. Connect it to MIDI controllers, DAWs, sequencers or other MPE synths over USB/OTG.

FEATURES
• MPE (MIDI Polyphonic Expression) and standard MIDI support
• Microtonal / non-12-TET playing with per-note pitch rounding
• Piano-style expressive keyboard (X for pitch, Y/pressure for modulation)
• Analog-style synth engine: 2 stereo oscillators + sub-oscillator + noise
• Filter section: ladder low-pass, band-pass, high-pass with envelopes
• Modulation: 2 LFOs with tempo sync, 2 general envelopes
• FX: chorus, delay and customizable reverb
• 40+ ready-to-play sounds (pads, leads, basses, keys, winds/strings-like)
• MIDI over USB/OTG to controllers, keyboards, DAWs and sequencers
• Supports sound design workflows similar to modular / Eurorack setups

USE CASES
• Perform expressive solos with slide and pressure
• Play microtonal ragas and maqam-style melodies
• Layer pads and analog basses for production
• Record MPE MIDI into your DAW and edit per-note expression

UPCOMING
• Built-in recording
• More factory programs
• Cloud / preset tools

Feedback is welcome — it helps prioritize the next features.

Ratings and reviews

Bought the pro version. OK, but 2 issues: 1. Sometimes it will start playing a note continously. This might be a feature that I somehow activated, but I can't figure out how to stop it without exiting the app. It doesn't even stop if I unplug the keyboard. 2. If the cable gets knocked or unplugged it creates a new device in the MIDI input menu so I have to reselectand and guess which one is working. Hope both can be fixed. Samsung Note 10+, Korg Microkey V1

This is an extremely useful, well laid out app. I use it mainly as a portable midi controller keyboard for my mini-synths (being able to pitchbend is an improvement over the keyboard of the hardware synth) but you could also play from a sequencer into this. Makes for a fun and versatile OTG songwriting/jam tool, and an easy way to add pitchbend to synth sounds. The price is accessible and great value for what you get!

I have just downloaded the app today. I really like how you're able to apply filters to the sound the synth makes. There are some things that might need some work: For a synthesizer, the learning curve seems to be low, but it's still rather alien to someone like me, who is still learning how to use a synthesizer fully. The app could benefit from a glossary of terms and an explanation of each function. It's unclear how to use microtonal tunings. A tutorial would be extremely helpful.

What’s new

Minor bug fixes