Doug just got back from vacation and would like to turn their photos into a slide show with titles and music, as Google photos doesn't do it. Leo says that it used to be a thing that Google would do. Any presentation manager would, like Apple Keynote or Microsoft Powerpoint. Corel makes the best one though: Corel PaintShop Pro Photo. But you can also use Corel Video Studio to do it. Here's how - https://learn.corel.com/tutorials/videostudio-create-slideshows/. Microsoft has a free app called SWAY as part of MS Office. It's free at sway.office.com. It's free and is sharable online.
A smartphone app can do it as well, such as iMovie for iOS.
Scooter X in the chatroom says to check out these free apps - https://filmora.wondershare.com/slideshow/best-free-photo-slideshow-makers.html