A scene can carry two independent audio tracks.

## Narration

A spoken introduction to the scene. Record it in the browser or upload
a file. It plays once when the learner arrives and can be replayed
from the scene's controls.

Narration is the single most effective addition to a scene that is
otherwise a wall of pins: thirty seconds of "here is what you are
looking at, and what I want you to notice" orients someone far better
than a paragraph they have to find first.

## Ambient sound

A looping background bed — kitchen noise, a busy lobby, birdsong. It
sets the scene's atmosphere and is deliberately quieter than
narration.

Use it sparingly. Ambient audio that plays under an assessment is a
distraction, and learners on shared devices may not be able to turn it
down.

## Accessibility

Anything said only in audio is unavailable to some of your learners.
Write the narration a **transcript**: a learner can then open it from
the scene and turn the sound off, which is what makes it a real
alternative rather than a note to yourself. See [Recording narration,
and writing its
transcript](/support/articles/recording-narration-and-transcripts).

If the narration carries instructions, it is still worth repeating them
in a pin, where they can be found without playing anything.