Leon, do you have the three word title and clue number, unambiguously? I think it's a title where the word is repeated twice and can only see one clue entry that might fit the bill.
Thanks a lot. The listener is new to me. It seems quite a challenge. The diagonal was hard to spot because of the Japanese name. Maybe we can exchange ideas on the next one.
It can take me a week or more that is if I complete , but don't hesitate to post if I can help I will as I don't have a problem with giving answers or asking for help, unlike some solvers of this crossword.