There are many theories as to why Victorians always look so dour in pictures.
Rea Philips, 23, who took her niece Mia, eight to the concert, told Daily Mail Australia: 'It was so inappropriate I had to cover Mia's ears and yes.
To be fair if you had a son or daughter for 18 years it would be quite an emotional adjustment to deal with the loss of one and the appearance of another, don't you think? He was like, Yeah, whatever, and he kept kissing my neck and just littering my body with all these horrible teenage-y hickeys, and I hated it.
But she told us to listen closer, so we did.
She explained that the room had a partition and the children would stay on the other side of the partition when she and her brother had sex.
Most were professional guys, doctors, lawyers, aged between 25 and 50.