More pond life

I was a frog in my first ever school play. Other people got to be birds and butterflies and cuddly rabbits. I got to be a slimy frog! I made a 'log' out of the inside of a big roll of kitchen paper, wore a green jumper and sang a solo of
'I'm just a speckled frog / sat on a speckled log / eating the most delicious grubs / gulp gulp'
Anyone know it?