Help needed: Chords in multiple part score
Forgive this naive question, but I have downloaded "Oh No" (Zappa) from the musescore webpage. This is a multiple part score, with each part clearly defined. I lack sufficient musical knowledge and need help with the following. The score has chords over the very top staff, which happens to be the "vocal" part transposed up a major second from the concert instruments, e.g., guitar. Am I to assume that these chords are in the concert key and not the "Vocal" key (up a major second)?
Thank you for your time and effort in your reply.