“Are we allowed to do that?”
The song played at the end is Megan Washington’s Lazarus Drug. Here’s the link to the Bluey version played at the end, including the bells ending with the bats.
Two parts that I really love (apart from all of it):
You can hear the change in the music when bluey and bingo start running through the empty house.
And
All I can think of when the bells start at the end is the end credits with the fruit bats - that’s exactly my view of every evening here in Brisbane.