Mariel Roberts has been played on NTS in shows including Emotional Landscapes, featured first on 22 March 2021. Songs played include Hoard .

American cellist Mariel Roberts is widely recognized not just for her “virtuosic” performances, but as a “fearless explorer” (Chicago Reader) in her field. Her ravenous appetite for collaboration and experimentation as an interpreter, improvisor, and composer have helped create a body of work which bridges avant-garde, contemporary, jazz, classical, and traditional music. Roberts is widely recognized for her “technical and interpretive mastery” (I care if you listen) and for performances which bristle with “excruciating intensity” (The Whole Note).

Roberts has appeared as a soloist and chamber musician across four continents, most notably as a member of the Wet Ink Ensemble, Mivos Quartet, International Contemporary Ensemble (ICE), Bang on a Can All Stars, and Ensemble Signal. She performs regularly on major stages for new music such as the Lincoln Center Festival (NYC), Wien Modern (Austria), Lucerne Festival (Switzerland), Cervantino Festival (Mexico), Klang Festival (Denmark), Shanghai New Music Week (China), Darmstadt Internationalen Ferienkurse für Neue Musik (Germany), and Aldeburgh Music Festival (UK). Roberts has been featured as a chamber musician on recordings for Innova, Albany Records, New World Records, New Amsterdam, Carrier Records, New Focus, and Urtext Records. Roberts' compositions have been performed at venues such as Merkin Hall and Miller Theater in New York City.

Roberts has released two solo albums of new works commissioned for her. The first, “Nonextraneous Sounds” (2012), was noted for its “technical flair and exquisite sensitivity” (Composers Forum). 2017's “Cartography” (2017), solidified Roberts' position as “one of the most adventurous figures on New York’s new music scene—one with a thorough grounding in classical tradition but a ravenous appetite for and tireless discipline in new work.”