Dayshell is a solo project consisting of American producer and singer-songwriter Shayley Dayshell Bourget. Formerly Of Mice & Men's clean vocalist, guitarist, and bassist, Bourget earned a dedicated fanbase with his unique vocals and input toward the music industry. Dayshell's debut self-titled album was released on October 15, 2013. The band's second album, Nexus, was released on October 7, 2016. The band released a third album titled Mr. Pain on October 29, 2019. Pegasus, Dayshell's highly-anticipated fourth album, was brought to life with the support of many hardcore fans who donated to "Operation Pegasus" on GoFundMe. Dayshell's new album "Pegasus" is due for release on September 22, 2023.