Yoko has no news about being solo (2,4,3)
I believe the answer is:
on ones own
'being solo' is the definition.
'yoko has no news about' is the wordplay.
'yoko' becomes 'ono' (yoko ono).
'has' is a charade indicator (letters next to each other).
'about' is an anagram indicator.
'nonews' anagrammed gives 'nesown'.
'ono'+'nesown'='ON ONES OWN'
(Other definitions for on ones own that I've seen before include "Helpless" , "Independently" , "Alone" .)