Question: Rachael Sage is an American singer-songwriter and producer, visual artist, and founded her own record label at the dawn of her musical career, Sage has shared stages with which American musical duo from New York made up of singers and songwriters Ian Axel and Chad King and signed to Epic Records? 
Sentence (from "A Great Big World"): The group is best known for their singles "This Is the New Year", which was performed by the cast in an episode of "Glee" and reached the "Billboard" Mainstream Top 40 chart in May 2013, and their international hit "Say Something", particularly after recording it as a duet collaboration with Christina Aguilera.
Relevant evidence: No