Mae resembles Dick Van Dyke
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Mae enters the room playing a couple of jaunty chords in time with their honks. At the start of their attempt, Mae says that they feel like Dick Van Dyke (a reference to the fact that this actor played the character Bert the Chimney Sweep in the film Mary Poppins, opening the film with a scene of him performing as a one man band in a park). In response, Alex says that they also look like him, but this doesn't seem to go down very well. They manage to complete the sequence of nine correctly, but then start making mistakes near the end of the sequence of ten. Mae therefore earns joint first place, along with Frankie.
(Written by Karl Craven)