Brit Awards organisers are reportedly struggling to persuade former winners to attend the 30th anniversary ceremony next week.
Groups including Coldplay, Dire Straits and Travis have all been nominated in the one-off 'Brits Album of 30 Years' category, but have so far allegedly snubbed the London event on February 16.
"Invitations have gone out to all concerned but it is now a tricky situation," a source told The Sun.
"Dire Straits, The Verve and Oasis have all split. Sade won't go as she likes to protect her privacy.
"Chris Martin and co have turned us down as they're recording and preparing for shows. Duffy is in the studio in the US. Organisers are exploring all avenues to resolve this."
Phil Collins and The Verve's Richard Ashcroft are reportedly among the few former winners who have agreed to attend the event.
Bookmakers have made Oasis's 1995 LP (What's The Story) Morning Glory? the favourite to win the 'Brits Album of 30 Years', which has been decided by Radio 2 listeners.