Pinwheel song

Does anyone remember a little song that was played many times on Pinwheel that maybe included a frog? I'm pretty sure someone or something was playing a piano. This is absolutely driving me mad! :o) I originally thought it was played on Sesame Street but now I'm pretty sure it was Pinwheel.

Of course... I could be wrong.

Thanks in advance.

I should add that the male singer reminded me of Three Dog Night and it seems like the words beautiful and maybe picnic were in the lyrics. The song always made me feel good. :o)