What does the cryptic crossword clue "Bowing is required during Elgar concerto (4)" mean?

The definition is "Bowing is required". The wordplay uses a hidden word. Hidden in "bowing is required during elgAR COncerto" The answer is ARCO.

Bowing is required during Elgar concerto (4)

Guardian Cryptic #29341 | 24 Down | 2024-03-27 flower