Thanks for the question Alright so on F#, A is -9 or +3 B is -7 or +5 C is -6 or +6 D is -4 or +8 I only located F#, counted the number of half notes from F# to the keys I want. And if it's either towards the left or right of F#, you know wether it's + or -. Please if you need more clarification, you can contact me on 0242842966. Thanks🙏