Redrob Tune

My role

Owned Fast/Pro graph decisions (APG, ref-audio removal, step counts) and the Jul 28 preference bake-off. Safety policy for lyrics sits in Studio's prompt gate.

Purpose

Generate usable length audio fast enough to bake off presets the same day, and keep harmful lyric and prompt content out of the product path without pretending “SFW suite” is the safety story.

Decisions

• Replace broken DiT CFG with APG on Pro

  Plain classifier-free guidance on the KSampler path is unreliable for this ACE Step family. Pro uses Adaptive Projected Guidance (CFG 1.05 + APG) on the SFT checkpoint; Fast stays at CFG ≈ 1 on the turbo weights with no APG.

• Split Fast and Pro on one graph, not one checkpoint

  Eight-step turbo and fifty-step SFT share the same Comfy graph and prompt contract. Iteration speed and polish are different operating points, not different products.

• Remove reference audio from the generation path

  Ref-audio timbre conditioning noised lyric adherence and clouded the latent space. We took it out so text and lyrics stay the conditioning signal, and so Fast/Pro bake-offs compare the same prompt contract.

• Treat safety as hate and discrimination policy, not an SFW label

  Ordinary music prompts are already non-pornographic by default. The real product risk is hate speech, racism, and sexual discrimination in lyrics or style text. Studio’s LLM prompt gate is the control; a branded “SFW bake-off” does not substitute for that policy.

Challenges

• No honest commercial preference study yet

  We did not invent a win rate against hosted music APIs. The measurable claim is wall-clock generation plus the bake-off winners on this page.

• Not released on its own

  Tune runs as Music inside Studio and is not published as a separate repository or checkpoint. Getting it means cloning Studio and attaching a GPU host.

Impact

• Same-day Fast/Pro matrices

  Fourteen to twenty-three seconds per sixty-second track made an eleven-prompt matrix practical, so winners could be marked without overnight jobs.

Outputs

• Audio

  Korean boom bap · Redrob Tune Fast

  A classic Korean boom bap hip-hop track, dusty vinyl crackle, hard snare cracks, warm sampled piano loop, deep kick, scratched vinyl textures, clear male Korean rap vocals, old-school head-nod groove, underground studio mood, punchy but not trap.

• Audio

  Neo-soul night · Redrob Tune Pro

  A slow neo-soul / new jazz R&B track, warm Rhodes electric piano, soft brushed drums, fretless bass, velvet female vocals, intimate late-night studio mood, gentle tape saturation, spacious reverb, quiet and drowsy.

• Audio

  Korean ballad · Redrob Tune Pro

  A soft Korean R&B ballad, 76 BPM, warm electric piano, gentle live drums, intimate female vocals, quiet late-night atmosphere, subtle reverb, emotional but restrained production.

• Audio

  Trap rap · Redrob Tune Pro

  A hard trap rap track, heavy 808s, crisp hi-hats, dark synths, male rap vocals, punchy drums, club energy, sliding bass, Atlanta trap bounce.

• Audio

  Indie pop · Redrob Tune Pro

  An upbeat indie pop song, bright acoustic guitar, catchy synth hooks, cheerful female vocals, sunny afternoon energy, clean modern production, hand claps, warm bass.

• Audio

  Korean trot · Redrob Tune Pro

  A bright classic Korean trot song, upbeat accordion and brass stabs, steady 2-beat bounce, clear female vocals with emotional vibrato, nostalgic variety-show energy, polished stage production, cheerful and catchy.

• Audio

  Hyperpop · Redrob Tune Pro

  A glossy hyperpop track, pitched vocal chops, supersaw synths, glitchy percussion, maximalist production, bright and chaotic energy, club-ready drops.

• Audio

  Hindi Bollywood · Redrob Tune Fast

  A bright romantic Bollywood Hindi pop song, warm string pads, soft dholak and light electronic beats, melodic flute phrases, clear female Hindi vocals with film-song ornamentation, glossy Indian pop production, emotional and catchy, 2020s filmi energy.

• Audio

  Atlanta trap · Redrob Tune Fast

  A hard Atlanta trap rap track, heavy sliding 808s, crisp triplet hi-hats, dark minor synths, male rap vocals with confident flow, punchy drums, late-night club energy, modern Southern trap bounce.

• Audio

  NYC boom bap · Redrob Tune Fast

  A classic New York boom bap hip-hop track, dusty sampled jazz horns, hard snare, deep kick, vinyl crackle, clear male rap vocals with dense multisyllabic rhymes, golden-era NYC underground vibe, no trap hats.

• Audio

  Chicago drill · Redrob Tune Fast

  A dark Chicago drill rap track, sliding 808s, sparse cold piano stabs, menacing hi-hats, male rap vocals with aggressive deadpan delivery, street tension, minimal and cold production, no melodic singing.

• Audio

  US chart pop · Redrob Tune Pro

  A glossy mainstream American chart pop song, big four-on-the-floor drums, bright synth hooks, polished female lead vocals, catchy pre-chorus lift, stadium-ready chorus, clean LA pop production, radio single energy.

• Audio

  US synth-pop · Redrob Tune Pro

  An American synth-pop dance track with 80s revival energy, analog supersaws, gated reverb snare, punchy bass synth, clear male vocals with a nostalgic neon glow, driving dance groove, polished modern production.

• Audio

  US pop-rock · Redrob Tune Pro

  An American pop-rock anthem, driving electric guitars, big live drums, warm bass, clear male vocals with an open-throat chorus, radio-friendly rock energy, stadium hand-clap moments, polished US alternative-pop production.

System

• Redrob Tune

  ~14-23s

  per 60s track

  Music on ACE Step 1.5 via ComfyUI: Tune Fast (~14s) and Tune Pro (~23s) for a 60s track; APG on Pro; ref audio removed; LLM prompt policy for hate/racism/discrimination; preference winners below