PREVIEW — Dr. Fill Landing Page (do not paste this file into Shopify)
Yurt Rock Labs · Plug-In

Introducing Dr. Fill

Dr. Fill

Every phrase deserves an answer. Drop a bar, get the fill — built entirely from the sounds of your own loop.

Buy Now$49.00

Or subscribe to The Vault and get it for only *$4.99

Formats: Standalone, VST3, AU, AAX (coming soon)

Authorization: Yurt Rock account login. No iLok or dongle required.

Free to try

Hear all 72 fills on your own groove.

The free download builds and auditions every fill from your loop — export unlocks with a license or Vault membership. No card. No iLok.

AU & VST3 · AAX coming soon · macOS 12+ / Windows 10–11

Give it a bar. Get the answer.
The Diagnosis

Give it a bar. Get the answer.

Drop in any loop — or capture audio straight off a DAW track — and Dr. Fill reads its tempo, feel, and swing, then cuts it into its voices: kick, snare, hat, and everything else in there. The fill it writes back is built entirely from those sounds. Same kit, same room, same hands.

MIDI Export for all Drum Software
Beyond WAV

MIDI Export for all Drum Software

Enjoy total flexibility with the option to export the fills as MIDI files in addition to WAV files. We also provide mapping support for all major drum plug-ins including Superior Drummer, Addictive Drums 2, Slate Drums, BFD, General MIDI and more.

72 ways to answer the bar you already have.
The Formulary

72 ways to answer the bar you already have.

Two families of fills, 36 apiece, each played back in context as a two-bar phrase — your groove, then the answer. Drummer fills play like someone sat down behind the kit. Producer fills chop, stutter, and reverse it. Audition every one before you commit.

235+ packs of feel, one drag away.
The Vault, built in

235+ packs of feel, one drag away.

Browse and audition the full Yurt Rock catalog inside the plugin. Vault members write fills from any loop in it instantly — real session-drummer grooves from Nate Smith, Clyde Stubblefield, Marcus Finnie, Darren King, and more, every one of them an answer waiting to happen.

Easy on the Eyes
Three Themes

Easy on the Eyes

Producing at noon or at 3 AM? Dr. Fill ships with three distinct themes — Original, Aurora, and Cool Light — so every fill stays crisp and readable no matter what time of day you're creating. Pick the look that fits your studio and get back to the music.

See it in action

The doctor is in.

From the waiting room

Customer Reviews

★★★★★
Dropped a Vault loop in, had a fill I actually kept within a minute — no menu diving, no manual. The two-bar preview with your own groove is the feature I didn't know I needed, because you hear the fill in context before you commit. It's become the last step of every drum edit I do.
Marcus T. — New York, NY
★★★★★
The Producer fills are the surprise here. I would never have programmed a reverse sweep into the downbeat myself, but Dr. Fill built one from my own loop and it ended up in the final mix. Nothing sounds pasted on because it's literally made of your track.
Danny R. — Los Angeles, CA
★★★★★
MIDI export mapped straight to Superior Drummer 3 with zero remapping — every hit landed on the right pad. I run fills as audio in the demo and switch to MIDI when the song gets serious, and both roads just work. Worth it for the export options alone.
Alicia M. — Nashville, TN
★★★★★
I use it standalone on my own field recordings as much as I use it inside Ableton. Same loop, 72 different answers, and the WAVs come out at whatever sample rate my session is in. It's the most flexible drum tool on my machine right now.
Kevin O. — Chicago, IL
★★★★★
Fills used to be the part of the track I'd put off for weeks. Now it's genuinely the fun part — audition a handful, drag the winner in, done in five minutes. My last three uploads all have Dr. Fill somewhere in them.
James P. — Austin, TX

Your Drums Have Suffered Enough. Here's The Cure.

Get the plugin.

Fills on demand.

One license, yours forever — or included with every Vault membership alongside Pick Pocket and the full catalog.

Buy Now$49.00

Or subscribe to The Vault and get it for only *$4.99

Formats: Standalone, VST3, AU, AAX (coming soon)

macOS: macOS 12 or later. Intel and Apple Silicon native (Universal 2).

Windows: Windows 10 or 11, 64-bit only.

CPU / RAM: Intel Core i5 / Apple M1 or equivalent. 4 GB RAM minimum, 8 GB recommended.

Disk space: 500 MB install, download only what you use

Authorization: Yurt Rock account login. No iLok or dongle required. Up to 3 activations.

Internet: Required for installation and activation only.

Tested in: Logic Pro, Ableton Live, Pro Tools, Cubase, Studio One, FL Studio, Reaper, Bitwig, GarageBand

Second opinion?

Still deciding? The download is free.

Install it, drop in the track you're working on right now, and let Dr. Fill write the fill. If it earns its place in the mix, the license is one click away.

AU & VST3 · AAX coming soon · Works fully offline after activation

*$4.99 is the cost for the 1st month of membership, then it's $19.99 a month. Cancel anytime.