Final answer:
The Enigma Variations by Edward Elgar are a set of musical variations that began with a little melody played on the piano. The variations can be considered as a musical portrait of their close friends or the musical styles they might have used.
Step-by-step explanation:
The subject of this question is Arts. The Enigma Variations, composed by Edward Elgar, are a set of musical variations that began with Edward Elgar playing a little melody on the piano for his wife. To entertain her, Elgar wrote variations on the melody. Therefore, the Enigma Variations can be considered as a musical portrait of their close friends or the musical styles they might have used. Each variation in the composition represents a different musical character or personality.