Poet Eric Greinke memorialises and analyses his intense collaborations with five accomplished poets (Harry Smith, John Elsberg, Hugh Fox, Glenna Luschei and Alison Stone) over a twelve year period. From each of the collaborations, a "third voice" emerged that represented the shared persona of the poet-participants. Greinke notates his experiences of these pairings from the perspectives of both head and heart while making his case for the expansion of a poet's style through collaboration.