the Grammy Award for Best Rock Performance. On 24 August 2014, the band announced a hiatus following their AM Tour. Turner and Helders have both pursued other projects during this time. In 2016, Turner announced his second album with the Last Shadow Puppets, Everything You've Come to Expect. Helders played the drums on Iggy Pop's album Post Pop Depression. In July 2016, the band revealed an elephant sculpture designed in the style of their ‘AM’ album cover for charity. The project raised money for the Sheffield Children's Hospital arts trail. 2017–2021: Tranquility Base Hotel & Casino In December 2016, Turner confirmed to BBC Radio Sheffield that the band's hiatus had ended and work had begun on their sixth studio album. The album had begun recording in September 2017. The album, Tranquility Base Hotel & Casino was released on 11 May 2018. The band headlined a handful of festivals in summer 2018, included Firefly Music Festival, TRNSMT, Rock Werchter, Lollapalooza, Austin City Limits Music Festival, and the Voodoo Experience. Despite its stylistic deviation polarising listeners, Tranquility Base Hotel & Casino was released to generally positive reviews. It became the band's sixth consecutive number-one debut in the UK, and the country's fastest-selling vinyl record in 25 years. Following its release, the album was promoted by the singles "Four Out of Five" and "Tranquility Base Hotel & Casino", multiple television appearances. Reflektor Magazine had the following to say about the album in a review, "After five years of silence, the Arctic Monkeys make their much-awaited return with surprising and hypnotic Tranquility Base Hotel & Casino. Perfectly managing to avoid self-parody or stylistic repetitions, this new album appears as a startling reinvention, a meandering and puzzling journey beyond known territories. Just like mankind first set foot on the moon on the ‘Tranquility base’ site, the Arctic Monkeys disembark in an unknown universe in which they reveal a new, unexpected aspect of themselves.". Tranquility Base Hotel & Casino was nominated for the 2018 Mercury Prize, an annual prize awarded to the year's best British or Irish album. This became the band's fourth nomination for the award: the second most nominations received by any act. The album was nominated for Best Alternative Music Album at the 61st Annual Grammy Awards, with single "Four Out of Five" nominated for Best Rock Performance. The album also appeared on numerous year-end lists. With Q and Kitty Empire of The