Audio over several slides

Welcome to the forum!

Yours is an extremely common question, and unfortunately there is not a simple answer, as Keynote doesn't support this directly. The most straightforward workaround is to create a separate presentation for the slides you want the music on, and set the music to play for that entire presentation. Then use hyperlinks to link up those slides to the other presentation(s) that have the other, nonmusic slides on them.

Absolutely -- that would be another way to go if the presentation is simple enough.

Tulse, you wrote:

"...The most straightforward workaround is to create a separate presentation for the slides you want the music on, and +set the music to play for that entire presentation+."

How can I set the music to play for that entire (separate) presentation?

Thanks for the answer!

In the Document Inspector, under the Audio tab, there is the option to specify a soundtrack that will play over the entire presentation.

Thanks!
I'm happy now 🙂

Create a new empty presentation. Cut the slides you want from the old presentation and paste them into the new one (you can do this with the slide thumbnails in the Navigator view). Save the new presentation. On the last slide of the now-truncated old presentation, select an object or text to act as the hyperlink, and using the Hyperlink Inspector set the link destination to the new presentation. (If you want the hyperlink itself to be invisible on that last slide, cover the slide with an object and then make that object transparent in the Graphics Inspector -- this will let you click anywhere on the slide to go to the new presentation.)