[5] Jim Lockey & The Solemn Sun signed to Xtra Mile Recordings in December 2011.
[8][9] In 2012 Jim Lockey & The Solemn Sun played sets at festivals around the world as well as two UK headline tours.
[10] The band has played alongside the likes of Mumford & Sons, Frank Turner, Dry the River, Johnny Flynn, Alessi's Ark and Pete Doherty,[11] with Jim rounding off 2012 opening for friend, fan[12] and label mate Frank Turner on his UK and Ireland headline tour in November/December.
[13] In July 2014, the band announced they would be returning under the name of "Solemn Sun" and a change in musical style.
[16] In early 2022 the band announced they would return as JL&TSS and a new album will be released via Xtra Mile Recordings in 2023, beginning with single 'Reno' on 12.05.23.