crowds who turned out for the anzac day memorial service at sydney 's martin place have been left fuming after the ivy nightclub played loud dance music during the minute 's silence .
the club , on george street in sydney 's cbd , is believed to have been responsible for turning the music on .
many of those in the record crowd of 30,000 took to twitter to express their anger at least five occasions .
` really enjoyed the service , everything was great until that