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As promised we will now discuss "Tonal" and "Real" Answers in a fugue.
1) A Real Answer in a traditional tonal fugue is basically the subject transposed to the key of the Dominant.
2) A Tonal answer in a traditional fugue is an answer that usually stays in the same key as the subject but the positions of Tonic and Dominant switch places. Therefore you will notice that various intervals in the subject will change in a tonal answer.
Here is an example of in C major with a subject and a tonal answer.
Sub: GAGCBAG, Ans: CDCGEDC
Notice how the positions of the tonic and dominant switch places in the tonal answer. There is also a modification of intervals for the answer to continue in stepwise motion as was presented in the subject.
Make sense?
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