Here be their requirements:
"Your band must be based in the UK.
Your band must be performing live gigs regularly and have at least one gig in April.
Your band must have a public website, containing audio samples, which we can hear."
Closing date is Apr 5th. The best 10 entries will go through to the next round, with the winner determined by a public txt msg vote.
The online application form is here.
Beautiful Days is run by The Levellers. Last year's performers included Miles Hunt, Lee Scratch Perry, The Mutts, Lockdown Project, Goldblade, and The Selecter.