The new track is the follow up to the band's Graham Coxon collaboration, 'What You Gonna Do??'
The collection features the band's entire recorded output, with a bonus disc, 'Flexible Strategies', containing exclusive bonus material of non-album recordings and B-sides.
The shows kick off at Belfast’s Waterfront Hall on 29 March and wrap up with two nights at London’s Eventim Apollo on 27 and 28 April.
The compilation brings together the best of the band’s first three studio album plus the twelve Top 40 singles clocked-up from their formation up to 1999.
The star's hotly-anticipated new record grabbed the top spot when it entered the Top 40.
The new track arrives as the fast-rising quartet are set to headline the Reading and Leeds Festivals.
The band’s step into eco-conscious clothing comes after frontman Matty Healy claimed that climate activist Greta Thunberg was snubbed by a lot of other big artists.
The new release also includes 'Time Won't Go Slowly' and new versions of ‘Open Your Eyes’ & ‘Chocolate’.
The new clip has been directed by Frank Lebon, who has also worked with ASAP Rocky, Skepta, FKA Twigs and Mount Kimbie.
The album contains all the tracks previously featured on the artist's EP 'Snacks' in addition to six new songs.
The new track follows the band's most recent album 'Wildness', their first studio set in seven years, which reached No. 2 in the UK album charts.
The new clip sees frontman Dan Smith singing from an old sofa while surrounded by a pile of unconscious bodies.
'Live From The Artists Den' is set for release on 26 July through UMC/Polydor.
Level 42 formed on the Isle of Wight and had a string of hits including ‘Lessons In Love’ and ‘Running In The Family.’
The eight-disc set contains all the Southern rockers' albums for the label from 1974-1980.
The album showcases Fender's guitar-fuelled indie rock style and was made at his self-built warehouse studio in North Shields in north-east England.