Teiku, a Talmudic acronym that roughly translates to "unanswered question", was co-founded by pianist Josh Harlow and percussionist Jonathan Barahal Taylor to explore each of their family's unique Passover vocal melodies through improvisation and sonic exploration, performed in a quintet with Art Ensemble/Sun Ra bassist Jaribu Shahid and reedists Peter Formanek & Rafael Leafar.

Since 2017 the father/son duo of double bassist Michael Formanek and woodwind player Peter Formanek have performed, recorded and toured together, here recording in the studio in 2019 with the wind player on tenor saxophone and clarinet, the familial history and life of collaboration showing in the warmth and easy discourse between the two, heard in 13 succinct improvisations.