Bertha and the Frog Choir

It's Bertha's day to try out for the prestigious frog choir, but when she sings...the other frogs cover their ears!  Poor Bertha is sad when she doesn't make the choir, but she's not alone.  Bertha's best friend Lucy is too little to try out.  What will they do?  The two of them cook up an idea that might make both of their dreams come true.