When they were finished recording Future Nostalgia, brothers Ewan and Shamus Currie started working on a side project they called BROS. Their debut LP, titled Vol.1, was released on October 14, 2016, via Dine Alone Records. International expansion: Changing Colours (2017 – 2019) When it came time to record again, instead of being produced in a concentrated burst, the band's next album, Changing Colours was recorded over an unusually extended period in 2017. The 17-track album was engineered, co-produced, and mixed by Thomas D'Arcy at Taurus Recording in Toronto, with Ewan Currie again in the producer role, and was released in February 2018. "Most of the records we've made have been under a short time constraint," drummer Sam Corbett is quoted as saying. "This one was done over six months, with some songs sitting around for two months. Then we'd come back and try different things, so I think that as a result, some of the songs took a different shape." The Changing Colours sessions also marked the recording debut of guitarist Jimmy Bowskill, performing not only guitar but mandolin, banjo, viola, fiddle, and pedal steel. "He joined us on tour, learned our whole set basically in one rehearsal and has been with us ever since," says bass player Ryan Gullen. The promotion of the album again saw the Sheepdogs embarking on multiple national and international tours, playing over 200 shows in Canada, Europe and the United States. Corbett announced in October 2018 that he would not tour with the band in the United States and Europe after being diagnosed with cancer. He underwent surgery in the summer of that year and began further treatment in the fall. Corbett resumed his post in the band on New Year's Eve for a show in Niagara Falls, Ontario that was broadcast live on CBC Television. Corbett announced his return in a December 22, 2018 Facebook post in which he also announced the birth of his first child. In early 2019, the band continued their promotion and touring of Changing Colours by joining Rival Sons on tour first in Europe and then in the US, including dates at The Bataclan, Paris and The Sheepdogs first Scandinavian shows in Sweden, Denmark and Oslo, Norway. 2019 also saw two Juno Award nominations for the band, this time for "Group of the Year" and for "Rock Album of the Year". Frontman Ewan Currie recorded his debut