Amaryllis is a six-song suite performed by a newly formed sextet of master improvisers, including Halvorson, Patricia Brennan (vibraphone), Nick Dunston (bass), Tomas Fujiwara (drums), Jacob Garchik (trombone), and Adam O'Farrill (trumpet). The Mivos string quartet joins for three of the songs, making this the largest ensemble for which Halvorson has written to date. The suite showcases Halvorson's many musical influences from jazz, experimental, new music, and beyond.