The term 'EMULATE ELLA FITZGERALD' can be summarized by saying that it is a reference to the act of imitating the singing style of the iconic jazz singer, Ella Fitzgerald. The crossword solution for this term is SCAT, which is a type of vocal improvisation that Ella Fitzgerald was known for. SCAT singing involves singing nonsense syllables and words in a rhythmic way, often with a jazz or swing feel.