Open your Google Slides presentation
Click the slide where you want the music to play
Click Insert
Click Audio
Choose one option:
Upload from your computer
Select from Drive
Search (if available)
Click Select to add the audio to the slide
Click the audio icon on the slide
Click Format options (if needed) or use the toolbar controls for playback
Click the play icon to preview
Click the three dots on the audio icon
Select options as needed:
Start playing on click
Start playing automatically
Loop audio
Playback across slides (if available)
Click the speaker icon or audio icon to adjust settings for the slide
If prompted, confirm permissions for Drive content
Present to confirm the audio plays correctly