Cthulhu
Cthulhu is a MIDI effect plugin for music production DAWs, developed by Xfer Records. It provides chord recognition and generation tools, allowing producers to input single notes and have the plugin suggest or generate full chord voicings in real-time. Cthulhu is available in multiple formats including AAX (for Pro Tools), AU and VST, and is widely used by composers, beat makers and electronic music producers working in professional audio workstations.
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1 suggestionCthulhu is distributed as an AAX plugin for Avid Pro Tools; it is not a standalone application and cannot be updated separately through the App Store or a generic download page. To get the native Apple Silicon version, you must use Xfer Records' own installer and account system. A native ARM build of Cthulhu has been available in beta for existing customers since 2021 and appears to have achieved stable status (confirmed sightings in mid-2024 forum discussions). If Pro Tools itself is on a current native build (version 2023.6 or newer, which is required for native plugin support), download and install the latest Cthulhu build directly from Xfer Records by logging into your account on xferrecords.com and visiting the download section. The beta channel restriction has been lifted for general use, so the regular installer should now serve the native build. Verify that Pro Tools is set to run natively (not under Rosetta) — if Pro Tools is still running in Intel emulation, even a native Cthulhu build will not function properly.
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