You can't directly download a song into Google Slides. Google Slides doesn't have a built-in feature to add music directly from a file. However, there are several ways to add music to your Google Slides presentations:
1. Use YouTube Music
- Find the song you want on YouTube Music.
- Click the 'Share' button.
- Select 'Embed'.
- Copy the embed code.
- Go to your Google Slides presentation.
- Click 'Insert' > 'Embed'.
- Paste the embed code.
- Click 'Embed'.
This will add the YouTube Music player to your Google Slides presentation.
2. Use Google Drive
- Upload your song to Google Drive.
- Go to your Google Slides presentation.
- Click 'Insert' > 'Video'.
- Select 'From Drive'.
- Choose your song.
This will add your song as a video to your Google Slides presentation.
3. Use a Third-Party Website
- Search for a website that offers free music downloads.
- Download the song in an audio format like MP3 or WAV.
- Upload the song to Google Drive.
- Follow the steps in method 2 to add the song to your Google Slides presentation.
Remember that you should always respect copyright laws when using music in your presentations.