Complex sentence: In 2015 the band played their own headline shows in the USA & UK in support of their second album release "The Door Behind The Door" & would join The Jesus & Mary Chain on their 30th Anniversary of "Psycho Candy" in America.
Split into simpler sentences: In 2015 the band played their own shows in the USA & UK in support of their second album release The Door Behind The Door'. They also joined The Jesus & Mary Chain on their 30th Anniversary of "Psycho Candy" in America.