 Complete the following phrase:  On October 17, 2015, Stefani performed Used to Love You at her first concert in over eight months at a MasterCard Priceless Surprises concert at New Yorks Hammerstein Ballroom. The singer wore a black turtle neck and striped skirt for the rendition; the performance was deemed heart-wrenching, powerful, and emotional by critics. Following the performance, it was announced that it would be released as the lead single from her upcoming album. She also sang the single at the 