So the candidates so far seem to be:
Abigail Mead ( a big ale mead)
Al Green
Alessia (Ale + Asia)
Opposites Attract
Billy Ocean (Beer L ocean)
Alicia Keys
Can (sounds like Cannes)
Billy (beer lea)
Good look Diddydodd.
If it is that it's a poor clue as there is no anagram indicator, but quite a few other clues are flawed too so you may be right.
Anyway it's a fun quiz for a good cause
I meant good luck , Diddydodd. Let us know when you find the answer.
I had a further thought which seems as strong as Bet Carter. I thought of Alex Clare (who had a big hit not long ago) as that is ALE and then an anagram of XL (extra large) and ACRE (an acre is an area). Once again though I see no anagram indicator in the clue