GigChain Keys is a free, open-source live-performance app for keyboard players, designed as an alternative to MainStage and Gig Performer. It combines instrument hosting, song setlists, chord charts and lyrics, performance controls, and practice tools in one program. It runs on Windows, macOS, and Linux, and is distributed under the GPL. The project is in public alpha: it has been used on real rigs but is still being tested across computers, audio devices, keyboards, and plugins. Users are advised to test it before relying on it for a gig and to keep backups of setlists.
The app includes four built-in instruments, hosts VST2 and VST3 instruments and effects, and can load a set’s sounds in advance so song changes are immediate while notes and effects tails continue. Its mixer offers channel effects, sends, outputs, and a master safety limiter; players can also configure splits, layers, MIDI controls, hardware synth changes, and mapped keyboard knobs or pedals. Each song can include a chart and lyrics, while practice mode turns chords into notes on a falling-keyboard display. Downloads include Windows installers or portable builds, a macOS Apple Silicon disk image, and Linux packages. Windows and macOS releases are currently unsigned, so first launch requires dismissing security warnings.
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