Festival No.6 have announced that Black Grape will play a special performance at the festival to celebrate the 20th anniversary of their brilliant debut No.1 album It’s Great When You’re Straight...Yeah.

Formed by Shaun Ryder (Happy Mondays) and Kermit (Ruthless Rap Assassins) in the mid-90s, Black Grape arrived in the middle of the derivative Britpop era with a joyous debauched party album that embraced everything from Beatles to bhangra, Cypress Hill to Serge Gainsbourg and the Rolling Stones and the Faces. It was the sound of the best house party you’ve never been invited to, and still sounds like nothing else.

Said Kermit Leveridge: "Festival No.6 is unique. It's a festival that has something for everybody, whether you wanna party hard or you’re a culture vulture. They always have great acts and it’s a beautiful backdrop. This will be the third year I’ve been to No.6 and I'm really looking forward to tearing it up with Black Grape. I’m also going to be curating the Super Weird Happening on the Estuary Stage with Greg Wilson. It’s gonna be majestic!”

Added festival organiser Gareth Cooper: “Black Grape are one of the most influential bands of the 90’s – they were a genre busting revelation. It’s Great When You’re Straight…Yeah was literally the sound track to a thousand parties back in the day and still sounds fresh today. We’re hugely looking forward to bringing their madcap vibes to Portmeirion this September. It’s going to be one serious party!”

Festival No. 6 is set in the eccentric surrounds of Portmeirion, Wales, where neo-classical architecture collides with sandy beaches and palm trees.

Bands, DJs, musicians and string ensembles will be performing across the entire site, from the historic town hall to the Colonnade gardens to the picturesque Bay Stage and the promenade along the estuary of the River Dwyryd. The diverse bill ranges from rock and roll to Balearic, funk to folk, seashanties to Welsh male voice choirs.