A key signature to name the key of, on its own on the staff, with keys of
the settings to choose from. With both modes asked, the key that shares
the signature — the relative major or minor — is never offered against
the right one, since the signature alone cannot tell them apart. The
question sounds as its key's tonic chord. A key signature is read, never
asked by ear: there is nothing in it to hear. Answered by playing, the
signature is shown with the tonic, and the key's scale — major, or natural
minor — is played up from it.
A key signature to name the key of, on its own on the staff, with keys of the settings to choose from. With both modes asked, the key that shares the signature — the relative major or minor — is never offered against the right one, since the signature alone cannot tell them apart. The question sounds as its key's tonic chord. A key signature is read, never asked by ear: there is nothing in it to hear. Answered by playing, the signature is shown with the tonic, and the key's scale — major, or natural minor — is played up from it.