What does the cryptic crossword clue "Elements of dance chosen — it precedes foxtrot (4)" mean?

The definition is "foxtrot". The wordplay uses a hidden word. Hidden in "elements of dancE CHOsen — it precedes foxtrot" The answer is ECHO.

Elements of dance chosen — it precedes foxtrot (4)

Guardian Cryptic #28977 | 22 Across | 2023-01-26 flower