The most common and most likely answer to this crossword clue is the 5 letter word ELGAR
I've seen this crossword clue in Financial Times
E
L
G
A
R
More clues leading to the result ELGAR
- Composer left in temper when rejected
- Musical composer left note inside organ
- Leaders in English lad’s newspaper upset scorer
- He scored Australian runs after leg breaks
- The origin of Emmaus, Liebesahnung, Gloria, Arthur and Rosemary!
- Listener describing empty stage for musician
- Last night of the Proms feature in hotel garden
- Barman an old king’s left for dead
- Deals go awry, every now and again
- Rave about introducing liberal scorer
Buddy explains!
The straight part
We know that "Barman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case barman = elgar.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.