'Bills & Aches & Blues' sees current 4AD acts covering songs from across their back catalogue.
The Welsh festival will take place between 19th and 22nd August, following last year's cancellation due to the coronavirus pandemic.
“Day6 is preparing a new album. The release schedule will be announced once it is confirmed."
Taking to Instagram, Mars revealed the duo will release a new album - titled 'An Evening with Silk Sonic'.
A stunning show of boundless potential.