Plot: Imagine Dragons, the Grammy-winning musicians behind chart-smashers like “Radioactive” and “Thunder,” returned to the Stern Show to chat with Howard about everything from their musical influences and new double album to the time lead singer Dan Reynolds spent two years with another big-name rocker slinging faith and shoveling feces in Nebraska. The group, which also includes lead guitarist Wayne Sermon, bassist Ben McKee, and drummer Daniel Platzman, also spoke about chatting with foreign leaders on Zoom and ghostwriting hits for pop stars before regaling listeners with an inspired performance of their 2017 single “Believer