They will perform their pieces on the theme of generations at Henham Park.
The decision is "disappointing" but a new interim solution has been arranged, a council says.
It is a very hot start to the working week in the region after a record-breaking weekend of weather.
Councillors on a planning committee unanimously back proposals for four trampolines on a promenade.
Plans for a trampoline attraction on a pier during the summer season have raised concerns.
Jonathan Huggins says it will cause an ecological "catastrophe", but Lee Symonds says it's not so bad.
Natural England installs an "innovative" drainage system in the Easton Valley to stop flooding.
A Suffolk village known for celebrity spotting is told residents may need to evacuate.
Helen MacDonald says she "did not" move to the Suffolk village because of its name.
