You’ll see me holding one, karaoke just starting? (4)
I believe the answer is:
mike
'you'll' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?
'me holding one karaoke just starting?' is the wordplay.
'holding' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'just starting?' says to take the initial letters.
The first letter of 'karaoke' is 'k'.
'i'+'k'='ik'
'me' placed around 'ik' is 'MIKE'.
'see' acts as a link.
(Other definitions for mike that I've seen before include "megaphone" , "letter in code" , "Comms code for M" , "Device for converting sound waves to an electronic signal (abbr)" , "Device collecting sound from a singer, say - boy's name (abbr)" .)