Task: Question Generation
Input (English): Since the mid-2000s, the mainstreaming of bands like Wilco and Feist have pushed indie rock into the adult contemporary conversation. In the early 2010s, indie musicians like Imagine Dragons, Mumford & Sons, Of Monsters & Men, The Lumineers and Ed Sheeran also had indie songs that crossed over to the adult contemporary charts.
Output (English): Along with Mumford & Sons, Of Monsters & Men, Ed Sheeran and The Lumineers, what indie artist has had adult contemporary success?