<Dl> <Dd> S = subject; A = answer; CS = countersubject; T = tonic; D = dominant </Dd> </Dl> <Dd> S = subject; A = answer; CS = countersubject; T = tonic; D = dominant </Dd> <P> A fugue begins with the exposition of its subject in one of the voices alone in the tonic key . After the statement of the subject, a second voice enters and states the subject with the subject transposed to another key (usually the dominant or subdominant), which is known as the answer . To make the music run smoothly, it may also have to be altered slightly . When the answer is an exact copy of the subject to the new key, with identical intervals to the first statement, it is classified as a real answer; if the intervals are altered to maintain the key it is a tonal answer . </P> <P> A tonal answer is usually called for when the subject begins with a prominent dominant note, or where there is a prominent dominant note very close to the beginning of the subject . To prevent an undermining of the music's sense of key, this note is transposed up a fourth to the tonic rather than up a fifth to the supertonic . Answers in the subdominant are also employed for the same reason . </P>

When does the answer occur in a fugue
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