Carnegie Hall NYC rush ticket

Hi,

Would like to get some rush tickets for Carnegie Hall concerts.
I called, and found out which concerts will have them offered.
Given the name of the venue, assume it is hard to get - few tickets
for a long line. Anyone has any experience/suggestions?

Please help.

I didn't find the right solution from the Internet.

References:
www.lonelyplanet.com/thorntree/forums/americas-united-states-of-america/united-states/carnegie-hall-nyc-rush-ticket
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Thanks