Halvorson has released a series of critically acclaimed albums on the Firehouse 12 label, from Dragon’s Head (2008), her trio debut featuring bassist John Hébert and drummer Ches Smith, expanding to a quintet with trumpeter Jonathan Finlayson and alto saxophonist Jon Irabagon on Saturn Sings (2010) and Bending Bridges (2012), a septet with tenor saxophonist Ingrid Laubrock and trombonist Jacob Garchik on Illusionary Sea (2014), and finally an octet with pedal steel guitarist Susan Alcorn on Away With You (2016). She also released the solo recording Meltframe (2015), and most recently debuted Code Girl (2018), a new ensemble featuring vocalist Amirtha Kidambi (singing Halvorson’s own lyrics), trumpeter Adam O’Farrill, saxophonist and vocalist María Grand, bassist Michael Formanek, and drummer Tomas Fujiwara.
One of New York City’s most in-demand guitarists, over the past decade Halvorson has worked with such diverse musicians as Tim Berne, Anthony Braxton, Taylor Ho Bynum, John Dieterich, Trevor Dunn, Bill Frisell, Ingrid Laubrock, Jason Moran, Joe Morris, Tom Rainey, Jessica Pavone, Tomeka Reid, Marc Ribot and John Zorn. She is also part of several collaborative projects, most notably the longstanding trio Thumbscrew with Michael Formanek on bass and Tomas Fujiwara on drums.