I heard aged generation's getting The Sun (3,2,3)

'the sun' is the definition.
(poetic term for the sun)

'i heard aged generation's' is the wordplay.
'heard' indicates a 'sounds like' (homophone) clue.
'aged' becomes 'of' (eg a 'child of six' is a child aged 6).
'generation' becomes 'day' (both can mean a period of time).
'i' is a homophone of 'eye'.
'eye'+'of'+'day'='EYE OF DAY'

'getting' acts as a link.