Other previously announced artists for the festival series include The 1975, The Strokes and Sabrina Carpenter
Polachek has been opening for The 1975 on their current tour
The 32-date tour sees the band revisiting New York's Madison Square Garden
The musician recently called the 1975 frontman a “slack-jawed fuckwit”
He also debuted The 1975 track ‘Then Because She Goes’ while opening for the band
"I’m sure people have just been calling me a c**t relentlessly"
"I love Noel Gallagher. We asked Liam to open up and he said he would have done it but he was busy"
The singer-songwriter will be the support act for his own band
The auction will raise money for The BRIT Trust
The staple of 'Robbers' live performances took place during the city's NorthSide Festival