A product demo has one job: show someone how the product works. Music can give the recording a steady pace, but it should never make a button label harder to read or a spoken instruction harder to hear. Start with the screen recording and the script. Add sound once the sequence makes sense without it.

Mark the moments that matter

Watch the rough cut and note where the viewer needs to concentrate. A form submission, a change of screen and a result appearing may each deserve a brief pause. Avoid cutting away from a result simply because the music has reached its next beat. Adjust the music to the demonstration, and leave enough time for the interface to be understood.

Keep the rhythmic and sustained parts separate while you compose the cue. A busy screen change may need less music than a closing logo. In FL Studio, automating the music level around key moments lets you revise those dips when the screen recording changes. Check the linked control before drawing the curve; lowering the whole mix would also lower narration routed through it.

Make a silent version first

Export a version with captions and no music. Ask a colleague to identify the action demonstrated and the result it produces. If either is unclear, fix the edit or the caption. A soundtrack cannot repair an explanation that skips a step.

Then add the cue at a restrained level. If the demo includes narration, listen to every instruction through ordinary laptop speakers. Remove a competing instrument during dense passages before reaching for more effects. Broader setup and production notes on FL Studio Pro can help when the issue lies in the music session rather than the video edit.

Give viewers control

On a portfolio or landing page, make playback and mute controls easy to find. Keep captions available, and test the video at the size it will actually occupy on a phone. Do not make a key piece of information depend on hearing the soundtrack.

Save the silent cut, music file and editable project with clear version names. That small handover makes a later change to a screen, a caption or a closing logo much easier.