The singer's fiancee celebrated her 35th birthday on Saturday (19.04.14) as Muse headlined the main stage at the festival in Indio, California.
Earlier in the month, Matt revealed on Twitter that he had laryngitis and instead decided to let the audience sing to the actress at the weekend.
He told the crowd: ''It's my girlfriend's birthday today. Her name is Kate, she's out there somewhere,'' adding, ''I want everyone to sing Happy Birthday to her.''
Rumours surfaced in February that Kate and Matthew, 35, had drifted apart when the blonde beauty was spotted at the BVLGARI's Decades of Glamour party without her engagement ring.
But the couple - who got engaged in 2011 and have two-year-old son Bingham together, as well as raising Kate's 10-year-old son Ryder from a previous relationship - appear to be putting on a united front.
Meanwhile, Matt and his band mates - Dominic Howard and Chris Wolstenholme - will begin working on their seventh album next month and hope to complete it by the end of 2014.
Kai Whiston is back already with his second album of his own 'No World As Good As Mine', and this time he has the help of organic instruments.
Her debut album The Witching Hour is out soon.
Feet are mid-tour and promoting their debut album, and tonight they played Ramsgate Music Hall with support from local band Malpractice.
Famed for performing one of her own songs as her opening gambit on The X Factor, Lucy Spraggan rocked up at the Booking Hall as part of her UK and...
After nearly thirty years since his first solo record Mark Lanegan has just released one of his very best and there's not many artists who can claim...
Listen to their new single 'People Change'.
For the first, and almost certainly last, time Cambridge indie rockers Mallory Knox performed at The Booking Hall in Dover.
'Devour You' is a fantastic follow up to Starcrawler's debut album and represents a move on in terms of sound and, in part, direction.