Generate Mashup Music · V6_WILD

What it is

KIE_Next_V6_WILD_a2051470 is the mashup node running KIE's V6_WILD Suno version - the one KIE's documentation says "pushes creative boundaries for bolder, more distinctive musical expression." In practice that means it takes the same two source tracks as its V6 and V6_MINI siblings and is more willing to wander when it fuses them. Sometimes that's a revelation. Sometimes the source material dissolves into something that shares a BPM with your inputs and nothing else.

Its job in a wider graph is the same as the other mashup nodes: turn two existing uploads into a new track that a video workflow can score itself with, without paying a Suno subscription. Music generation in ComfyUI has been the API's strongest remaining case - local models like ACE-Step got genuinely good at instrumentals, but clean vocals and lyric phrasing are still where the hosted models pull ahead - and mashup is one of the few jobs where an audio reference beats a paragraph of description.

How the mechanism works

The node posts your payload to KIE's task API and then polls for it, itself, until the job completes. Polling starts at 2.5 seconds and backs off toward 15, and the whole thing is bounded by timeout_seconds (default 1200, max 7200). When the task reports success, the returned MP3 is fetched and decoded into ComfyUI's AUDIO dict. Nothing runs on your GPU; the cost lands on your KIE credit balance, which the node reports back on completion.

Version handling is the detail worth knowing if you hit odd errors: V6_WILD is the provider version and it goes inside the request payload, while the outer KIE job envelope uses KIE's market name for the mashup API. Builds before v0.4.10 got that wrong and sent the version where the market name belonged - if mashup submissions fail on model grounds on an old install, update and restart before you debug anything else.

The inputs

• upload_url_list - a JSON array in a multiline text field: ["https://.../track-a.mp3", "https://.../track-b.mp3"]. Public URLs only; upstream uses the first two entries. For local files, run them through KIE • Upload Audio and paste the resulting URLs.
• style - required, and I'd argue this is where "wild" gets tamed. Vague styles plus WILD gets you mush; specific ones ("trip-hop drums, Swahili vocals, tape saturation") give it somewhere to push.
• title - required, labelling only.
• prompt - how you describe the desired content. Leave lyrics blank and the prompt gets sung; that's a documentation quirk, not a bug.
• duration - 10–360 seconds, default 20.
• style_weight (0.61 default here), weirdness_constraint (0.72), audio_weight (0.65) - three dials aimed at the same question: how much of the sources survives. With WILD, dropping weirdness_constraint is the fastest way to find out how far it'll go.
• variety - 0 to 4, from "same style, twice" to the tooltip's own "unreasonably varied."
• vocal_gender - the honest description is "increases the probability," not "guarantees."
• persona_id with persona_model - apply a saved Suno style or voice persona to the mashup if you have one.

Outputs

audio is the finished track as a native ComfyUI audio object. url is the primary result URL, all_urls_json contains every URL the provider returned, task_id is the job handle, raw_json is the full response, and credits_consumed / credits_left are reported in the node's on-canvas receipt.

Read all_urls_json even if you're happy. Every Suno request here returns two tracks and audio only carries the first; the alternate take exists and sometimes it's better.

Install

cd ComfyUI/custom_nodes
git clone https://github.com/felipederosilva/ComfyUI-KIE-Nodes-Next
cd ComfyUI-KIE-Nodes-Next && pip install -r requirements.txt

Then restart. The only dependencies are requests, Pillow, numpy, PyYAML - no weights, no GPU requirements, nothing to download. Windows users have a one-click installer in the repo's dist/ folder. ComfyUI Manager support is the pack's stated direction (it ships registry metadata under publisher felipeosilva) but the manual clone is what always works today.

Set the key once in Settings → KIE.ai Nodes Next → Connection. It's verified against KIE before it overwrites a saved key, and KIE_API_KEY in the environment takes precedence on headless boxes.

Common issues

Missing key. The error text is explicit and tells you where to paste it - no guesswork.

A failed task after a long wait. Check raw_json; KIE returns a reason such as a sensitive-word rejection, which lyric-heavy prompts trip more often than you'd expect.

Timeouts. Raise timeout_seconds rather than resubmitting blind, and remember the earlier task_id can be polled with KIE • Wait for Task - the job isn't necessarily dead just because your node stopped waiting.

Unfetchable source URLs. KIE's servers, not your machine, have to be able to download those two files. Anything behind auth or on a private network fails.