Get to meeting with old rocker disgraced at one time (9)

'disgraced at one time' is the definition.
(as in attainder, historical form of punishment)

'get to meeting with old rocker' is the wordplay.
'get' says to put letters next to each other.
'to meeting with' becomes 'attain' (I can't justify this - if you can you should give a lot more credence to this answer).
'old rocker' becomes 'ted'.
'attain' put next to 'ted' is 'ATTAINTED'.