Create 'call and response' music puzzle

Hi, I'm looking to create a call and response puzzle. You approach a door, it plays 4 musical notes(in a random sequence) and there will be 4 platforms that each have a single note assigned to them. You use these platforms to respond.

Example: Sequence A is the notes [A C B D]. Platforms are laid out 1 2 3 4 so to answer correctly the order of platforms would be: [ 1 3 2 4].

Sequence B - Notes are [D B C A] Platforms would be: [4 2 3 1]

Any ideas of what I could look in to for implementing this would be great! Thanks