The foundational form of music presents a subject and expands on it with various instruments, adding complexity through exposition, episodes, and variations.
It combines several subjects, whereas triple and quadruple fugues combine three or four subjects, resulting in a complex composition.
It is a distinct type in which the subject enters inversion or augmentation, thereby adding complexity and interest to the overall fugue.
It entails subject variations, demonstrating the composer's musical manipulation abilities and elucidating the essence of fugue in music.
It is a condensed, smaller version of a fugue with fundamental elements while having a simpler structure.