Maybe air current problem about leader of Conservatives (5)
I believe the answer is:
music
'maybe air' is the definition.
(I know that air is a type of music)
'current problem about leader of conservatives' is the wordplay.
'current' becomes 'I' (symbol for electric current).
'problem' becomes 'sum' (arithmetic problem).
'about' is a reversal indicator.
'leader of' says to take the initial letters.
The initial letter of 'conservatives' is 'c'.
'i'+'sum'='isum'
'isum' written backwards gives 'musi'.
'musi'+'c'='MUSIC'
(Other definitions for music that I've seen before include "'If ... be the food of love, play on'(Twelfth Night)" , "(Pleasant) sequence of sounds" , "Staff will support this" , "being confined by bars?" , "Aural entertainment" .)