Ancestors was born out of Hartigan's sense of loss. It is a catharsis without closure and an acutely personal exploration of life, death, afterlife and, mostly, family, in the immediate and universal sense. "Flight/Homecoming" opens the set with saxophonist Hafez Modirzadeh covering a spectrum of emotions including keening a brief mourning. Baomi's wordless vocal improvisation continues the theme of movement and transition, before Modirzadeh returns to transport the vocalist to a spoken word suite reaffirming the continuous cycle of life beyond the physical form. Throughout this opening segment, Hartigan alternately augments and drives the music, using bells, dondo, bass drum and hi hat before moving to piano.

Within the two-disc set, Hartigan's own family emerges as a Greek Chorus. A poem by his grandfather is carried by Sandra Poindexter's poignant violin work, while Hartigan's tap danced "Waltz Clog" is a tribute to both his uncle and mother and in a much lighter vein. Pop standards of past generations, as well as Tchaikovsky's "Violin Concerto," appear as favorites of Hartigan's parents, adding personal insight in the midst of more multicultural styles. Hartigan's piano brings to mind Jelly Roll Morton on "Hazel's Dance" and "Five Foot Two."