Band tour teaser: Seedance 2.5 with an audio reference, $8.67 a city

A 15-second 9:16 tour teaser on Seedance 2.5 costs $8.67 at 720p on Sume, and an audio reference or reference images do not change that number. For three tour stops that is $26.01. The only reference type that adds to the bill is a reference video, which Sume prices at 0.6x the token price over the output seconds plus an assumed 15 input seconds.

That makes music-led teasers one of the cheaper reference jobs: you send two or three photos and a short audio file, and you pay the plain video-token price.

What to send

Seedance 2.5 reports image_url, video_url and audio_url under supported_input_references in the Sume catalog (see the video docs, read 2026-10-07). References go in input_references:

{
  "model": "seedance-2.5",
  "prompt": "Four-piece band on a dim stage, @Image1 as the singer, slow handheld push, lights pulse with the beat of @Audio1",
  "duration": 15,
  "resolution": "720p",
  "aspect_ratio": "9:16",
  "input_references": [
    {"type": "image_url", "image_url": {"url": "https://example.com/singer.png"}},
    {"type": "image_url", "image_url": {"url": "https://example.com/stage.png"}},
    {"type": "audio_url", "audio_url": {"url": "https://example.com/hook-15s.mp3"}}
  ]
}

Rights, cuts and a cheap proof

Cut a 15-second hook from the track before you send it. The reference is a guide for rhythm and mood, not a mastered soundtrack: lay your full release over the clip on a timeline afterwards. Avoid photos of real people unless your rights are clear.

At 480p the same teaser is $4.04, enough to check pacing against the hook before you pay for the 720p take. Tour posters with text should be added as a caption or overlay, not asked of the model.

Limits

Sume does not offer a seed on video models, so each city is a new draw. Keep the prompt and references identical and change only the venue line if you want a consistent family of teasers.