The follow-up to 2019's 'Compliments Please' will arrive in October
The track, which comes alongside details of a 2021 UK tour, discusses "how complicated it is to just be a human"
The annual event has also announced Arlo Parks as its 2021 ambassador
The inaugural event is set to take place at the Sheffield University Students' Union
Lapsley, Another Sky, KT Tunstall and more will all play on Instagram over the weekend