Your Picture animation should be last in the list.
Click on Preview. It should be like this:
Do the same on all the song slides...
Go to the first list slide (Movies) and select all the pictures:
Then add a green animation. They should all get a number square beside them (#5) ...
Change the first picture which has a mouse icon (= "On Click") to Start "With Previous".
There should be no mouse icon beside any pictures.
Test your slide, make sure you have the pictures with the matching bullets. Either:
On the other list slides, do the same steps:
If you've done it correctly, your animation lists on the other list slides should look like this, following the pattern below...
Preview your slides to make sure the pictures come in with the right bullets.
Keep your Animation Pane open and get all your animations checked.