Every phrase deserves an answer. Drop in a bar and Dr. Fill writes the fill — built entirely from the sounds of your own loop. Same kit, same room, same hands. Nothing foreign gets added. Thirty-six ways to answer the bar you already have. How it works Give it some groove. Capture audio straight off a DAW track, drop in any loop, or browse the built-in Vault library. Get the diagnosis. Dr. Fill reads tempo, feel, and swing, then cuts your loop into its voices — kick, snare, hat, and everything else in there. Pick the prescription. Seventy-two fills across two families — Drummer and Producer — each one played back as a two-bar phrase: your groove, then the answer, in context. Drag it out. 24-bit/48kHz WAV straight onto your timeline, or download for use in your productions inside of any DAW or sampler. What's inside Capture from track — record any DAW track through the plugin, with automatic loop detection (finds the clean bar and cuts it click-free) The formulary — 72 fills in two families: Drummer fills that play like someone sat down behind the kit, Producer fills that chop, stutter, and reverse it Nothing foreign gets added — every hit in every fill is cut from your loop, so the fill sounds like the track it's going into, not like a sample pack dropped on top The Vault, built in — browse and audition the full Yurt Rock catalog inside the plugin; Vault members write fills from any loop in it instantly Starter grooves included — real loops from Nate Smith, Clyde Stubblefield, Marcus Finnie, and Darren King, ready to prescribe against the moment it opens Session-friendly — your work saves with the DAW project; works fully offline after activation; use on up to 3 machines Free for Vault members Have a Vault membership? Dr. Fill is included — just sign in inside the plugin. Members also unlock fill generation from the entire catalog: over 190 packs of session-drummer feel, every one of them an answer waiting to happen. Compatibility Formats: VST3 and AU (Ableton Live, Logic Pro, FL Studio, Cubase, Studio One, Reaper, and more) Platform: macOS 11+ (Apple Silicon & Intel). Windows and Pro Tools (AAX) support coming soon. Exports: 24-bit/48kHz WAV FAQ Does it work offline? Yes. Activate once, then Dr. Fill never needs the internet to run — made for studios that stay disconnected. No dongles, no iLok. How many machines? Three, with self-serve deactivation. Do I need a Vault membership? No — the $49 license is yours forever, fully functional on your own audio. Membership adds catalog fills (and includes the plugin itself). Can I try it first? The free download builds and auditions the full set of 36 fills on the included starter grooves and your own loops — only exporting requires activation.