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About SetPrep
SetPrep is a desktop app for DJs that uses AI to plan a full mix from your music library, and writes the energy-arc colour, transition note and star rating onto every track, ready to import into your DJ software. Available on Mac + Windows. Hot cues (Mix In + Mix Out), loops, memory cues and structural cues (Intro End / Outro Start / DROP / Build / Breakdown) are coming soon. Exports to Rekordbox, Serato and Traktor.
SetPrep is the only AI mix planner that pairs an LLM with smart playlists in plain English so DJs can organise their entire mix history with natural-language rules. It's also the only one that ships hot cues + memory cues + loops written directly to your tracks on the way (coming soon). Competitors generate setlists; SetPrep ships the working mix.
SetPrep beta launched in May 2026 on Mac + Windows. Invite-gated open signup; downloads released to applicants in batches. Free tier (3 mixes / month) needs no card; Pro is £5.99/month or £59.99/year (~17% saving) via Polar.
Fact sheet
Product
SetPrep, AI DJ mix planner
Platform
macOS (Apple Silicon + Intel) · Windows (x64 + ARM64)
Status
Open beta (April 2026)
Price (Free)
£0 · 3 mixes / calendar month
Price (Pro Monthly)
£5.99 / month · unlimited mixes
Price (Pro Annual)
£59.99 / year · ~17% saving
Output
Rekordbox + Serato + Traktor XML, plus direct Rekordbox DB write
Cue types written (v1.0)
Energy-arc colour coding · transition-note comments · star ratings
Cue types coming soon
Hot cues (Mix In + Mix Out) · Loop point · memory cues (Intro End / Outro Start) · structural cues (DROP / Build / Breakdown)
AI engine
Reasoning AI (LLM-based mix planning + smart-playlist DSL translation)
Mixing styles
10 (Long Blend, Power Block, Narrative, Rollercoaster, Multi-deck, Open Format, DnB, UKG, Hard Techno, Amapiano)
SetPrep started with a frustration any working DJ knows: the prep eats the night. You buy 30 new tracks, you've got a club slot Friday, and somewhere in the gap is hours of Rekordbox: load the tracks, listen for the drop, set hot cues, set memory cues, drag the loop point, colour code by energy, write the comment field, plan the order. Then test it. Then re-do half of it.
The promise of an AI tool that could do all of that (not just spit out a tracklist, but actually place the cue points and write the colour codes) felt obvious. Nobody was building it. So we did.
SetPrep reads your Rekordbox library directly (no XML export gymnastics), analyses every track for BPM, key, drop position, and structure, then asks the AI to plan the mix in the style you pick: Long Blend like Charlotte de Witte, Power Block like Chris Lake, Narrative like Anyma. The AI returns the order, the cue-in points, the cue-out points, the loops, the transition notes, plus a plain-English explanation of why every track is there. SetPrep snaps everything to the nearest phrase boundary, writes it back to Rekordbox, and you walk into the gig with a fully prepped set you actually understand.
Quotable lines
Pre-written lines you can lift directly. Attribute to "Chris Seller, founder, SetPrep" unless otherwise specified.
"Every other AI DJ tool stops at the tracklist. The work is in the cue points. That's where the hours go. SetPrep is the first tool that actually finishes the job."
Chris Seller, founder, SetPrep
"I built SetPrep because I was burning Friday afternoons placing hot cues for the Friday night gig. The AI part is the headline, but the real innovation is the integration: the cues end up in your Rekordbox library, not in a CSV download."
Chris Seller, founder, SetPrep
"The AI is doing the kind of work that used to need a human DJ ear: hearing the build, finding the drop, deciding when to mix in. We're not replacing that taste. We're saving you the hours of mechanical work that have nothing to do with taste."
Chris Seller, founder, SetPrep
"Smart playlists in plain English. Type 'my high-energy tech house from this month' and your library organises itself around it. No DJ tool we know of pairs an LLM with library organisation. That's the moat."
Chris Seller, founder, SetPrep
"Other AI tools hand you a tracklist. SetPrep tells you why every track is there, so you're learning the craft while you prep. The mix is one output. The DJ getting sharper is the other."
Chris Seller, founder, SetPrep
Brand assets
Logos, marks, and the brand colour palette. Use freely in editorial coverage. For commercial co-branding, get in touch first.
Style picker showing all 10 mixing patterns derived from real DJ techniques (Long Blend, Power Block, Narrative, Rollercoaster, Multi-Deck, Open Format, DnB, UKG, Hard Techno, Amapiano).
Screenshots are added as features ship. For latest versions or custom sizes, email hello@setprep.app.
Founder bio
Chris Seller is a UK-based sales leader, DJ, and producer. He built SetPrep after realising he was spending more time placing hot cues in Rekordbox than actually playing music. By day he leads the sales team at a software company; by night he plays tech house and Power Block sets on a Pioneer DDJ-400. Chris has been DJing since his university years and producing since 2024.
Chris is available for interviews and podcast appearances. Reach out via the contact below.
