S9E26: You're Five Ones and I'm Five Tens

Testing: one, two, three, four, five! Rockstar Numberblock Five is rehearsing for a music concert, but will she ever be as good as superstar Numberblock Fifty? When Fifty sings a cool song that shows Five all the ways in which they are similar, Five learns that they are not so different after all - it’s just a matter of size.