Starting late, Trump succeeded playing golf - or perhaps lied? (3-4)

'perhaps lied?' is the definition.
'art song' can be an answer for 'lied?' (I've seen this in another clue). I am unsure of the 'perhaps' bit.

'starting late trump succeeded playing golf' is the wordplay.
'starting late trump' becomes 'art' (I can't justify this - if you can you should believe this answer much more).
'succeeded' becomes 's' (genealogical abbreviation).
'playing' becomes 'on' (on can mean playing or performing).
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'art'+'s'+'on'+'g'='ART-SONG'

'or' is the link.

Can you help me to learn more?