Which Novelez Block Should Carry Your Music and Sound Effects?
September 23, 2026
You finish a scene in Novelez, drop a track in, press Preview, and something is slightly off. The café music starts a beat too late. The rain loop from the last location is still running. A door knock lands two lines after the character reacts to it. None of these is a broken file. Each one is a sound placed in a slot that was built for a different job.
Novelez gives you several places to attach audio. A Scene block has an optional background music field. There is a dedicated BGM block, a Stop Music block with no settings at all, a sound effect field inside every Dialogue block, a separate SFX block, and an optional ending track on the Ending block. They overlap on purpose, and that is exactly why it helps to decide what each sound is for before you decide where it goes.
This guide works through that decision. The short version: name the job first, give that job to one block, and then play from the real start to confirm the handoffs.
What job is this sound doing?
Before opening the asset picker, describe the sound in one phrase. Most audio in a visual novel falls into one of five jobs:
- a location has its own musical mood
- the mood changes while the location stays the same
- the music should stop and leave silence
- a short sound belongs to a specific line
- a short sound belongs to the staging, not to any line
A sixth job appears only at the end: music that plays on the ending screen.
Once the job is named, the block usually chooses itself. The trouble starts when one sound is asked to do two jobs, or when two blocks are both trying to do the same one.
When the place changes, let Scene carry the music
The Scene block already switches the background image and names the location. According to the official Scene documentation, it can also set background music in the same step, and when each location has its own track, setting it there is the cleanest approach with no separate BGM block needed.
This keeps picture and sound tied together. If you later move the seaside scene earlier in the story, its music moves with it. If you duplicate the scene for a second route, the music comes along. There is one block to check instead of two blocks that have to stay in the right order.
One thing the public docs do not spell out is what happens to the previous track when a new Scene leaves the music field empty. Do not guess. Preview a location change with the field empty and listen. Whatever the current behavior is, write your scenes around what you actually heard, and set the field explicitly on any Scene where the answer matters.
When the mood turns but the room stays, use a BGM block
A conversation in the same café can go from relaxed to uncomfortable in one line. Changing the Scene block just to swap the music would also reset the background and blur the idea that nothing about the place has changed.
That is the case the BGM block exists for. The official BGM documentation lists three situations: changing the mood without changing the location, replacing the music mid-scene while keeping the background, and deliberately delaying music for effect. The new track replaces the old one and loops for as long as the game keeps running.
Two practical notes follow from the loop. Pick tracks that loop without an obvious seam, because the player may sit on one line for a long time. And place the BGM block right at the line that turns the mood, not a few blocks earlier where it feels convenient. A track that changes before the reason for the change reads like a spoiler.
The delayed start is underused. Letting a scene open with no music, then bringing in the track after the first real exchange, often makes the music feel earned. A Scene block with an empty music field followed later by a BGM block is one way to set that up, provided your preview confirms the opening is actually quiet.
When the moment needs silence, use Stop Music
Silence is a choice, and Novelez treats it as one. The Stop Music block has no properties. Playback reaches it and the background music stops.
The documentation suggests three uses: cutting the music on a shocking event, leaving a beat of silence before a new track with Stop Music, then dialogue, then a new BGM block, and stopping before an Ending block so the conclusion lands with more weight.
It also warns about two mistakes. You do not need Stop Music when a Scene block is about to change the track anyway, since the new track replaces the old one. And a long silence can make the player wonder whether the audio broke. Keep it to a few lines, long enough to read as intentional.
A useful habit is to pair Stop Music with a single short sound effect right after it. The silence frames the sound, and the sound confirms the silence was on purpose.
When a sound belongs to a line, put it on the Dialogue
A gasp, a cup set down, a phone buzz that a character immediately answers: these sounds are tied to a specific line of text. The Dialogue block has its own optional sound effect field, and the SFX documentation says that for sounds synced with dialogue it is more convenient to set them directly on the Dialogue block.
The benefit is that the sound cannot drift away from its line. If you reorder dialogue, split a long block into two, or move a conversation to another route, the sound travels with the words it belongs to.
When a sound belongs to the staging, use an SFX block
Some sounds happen between lines. A door knock before anyone speaks. Glass breaking offscreen. A notification chime that interrupts the silence you just created. For these, the SFX block is the better fit. It plays a short one-shot sound independently of the background music, so the track keeps going underneath.
Because it is its own block, you can place it precisely: right after a Show block brings a character in, or right before the line where someone reacts. The docs recommend keeping these files short, around one to two seconds, and using them sparingly. Anything longer is really a BGM job.
What about the ending screen?
The Ending block can carry its own optional ending BGM, alongside an ending name and a credits image. The Ending documentation notes that settings on each Ending block are unique to that ending, while the credits text from the Settings tab is shared by all endings.
That makes it easy to give each ending its own musical signature. If you used third-party music anywhere, the Ending Credits documentation asks you to follow the license's attribution requirements, and the credits text is a natural place to list those sources.
Keep files light before you place them
Novelez accepts MP3 and OGG audio. The Supported Formats page recommends OGG because it is smaller at similar quality, and both the BGM and SFX pages repeat that advice. Smaller files load faster in the browser player, which matters most for the first track a new player hears. The Common Issues page also links audio playback problems to unsupported or incorrectly uploaded formats, and points to the local conversion tool as the fix.
Play the whole path, not just the block
Audio decisions are about handoffs, so a preview that starts at one block can hide the problem you are looking for. After placing sound, run at least these passes from the real start:
- play the opening and confirm the first track starts where you intended
- cross every location change and listen for overlaps or missing music
- reach each Stop Music and check the silence is short and clearly deliberate
- follow one branch into each ending and confirm the ending music
If two blocks are both trying to change the music at the same point, remove one. If a sound effect lands before or after the moment it describes, move it onto the Dialogue or next to the right block instead of adjusting everything around it.
Novelez does not mix, fade or edit audio files for you, and the docs do not promise precise timing beyond block order. What it does give you is a clear slot for each job. Decide the job first, and the slot becomes obvious.
Which sound in your current project is hardest to place: a mood change inside one location, a silence that needs to feel intentional, or a small effect that keeps landing a beat too late?