A useful starter for Music or Tutor time - keep your students engaged on entry looking for connections between the images. The nature of the Odd One Out starters is to prompt guessing and questioning from the students, so there are no questions on this starter apart from "which is the odd one out?". I find dropping clues in where they get stuck helpful to prompt further looking and guessing. The important thing is not for them to know, or guess the answer but to open up possibilities of thinking for them.