Grab any sample pack and get your second free with code SECONDCOURSE 🎁
FREE PLUGIN DIRECTORY
hirokutsu - FMusubi product image
Synth

hirokutsu - FMusubi

Free

FM synthesizer for building tones from four interacting sound sources.

Visit developer / download Save for later
Added to the directory: 2026-10-30
Prices and requirements can change. Check the developer’s page before downloading.

What it does.

A filter, vibrato and reverb provide further ways to shape the sound.

Before you install.

Availability
Free
Operating systems
Windows
Plugin formats
VST3, Standalone
Review status
Developer details reviewed; not personally tested
Last information review
2026-10-30

Download & installation notes

Windows 10/11 x64, VST3 and standalone. Live signed-out BOOTH page exposes a 0 JPY Free Download; Support version is identical. Free for commercial/personal music, no plugin redistribution. BOOTH download login requirement not tested.

Source for these details ↗

See it in action.

Official FMusubi sound demonstration (hirokutsu); accompanying drums are external samples.

Watch the video ↗
Find it in these collections
Odd Ingredients ↗
Keep digging

More ingredients to try.

Fresh from the kitchen

The good stuff, straight from the kitchen.

Free plugin discoveries, fresh sample packs and the latest from Loop Kitchen straight to your inbox.

A little extra flavour

Give your plugins something to play.

Explore Loop Kitchen’s sample packs: original melodic compositions and soulful samples to chop, flip and make your own.

Explore our sample packs ↗