The musicians are rehearsing for the event, possibly at school or even a concert
People are playing music.
People are walking along the beach.
Four boys are sleeping.
The photographer is taking pictures of actual birds.
A man in a dress is painting the wall.
My problem is not significant, though I might have to solve it myself.
The Lake District has been very quiet recently.
The decline of our annual GDP has caused our nation to tighten its collective belt, thus increasing our average national savings to a higher level than it was 5 decades ago.