as part of that process, the band used singer astrid munday for backing vocals and former cold chisel keyboardist don walker on piano for the song "free dirt," which had been left off the debut album. myers said: "i really liked the song itself and i wanted to give it another go." the band had hired munday after hearing her vocals on paul kelly's "before too long". the band asked for walker's contribution when they saw him walking through trafalgar studios to collect some tapes. myers said: "i thought what this song needs is some really beautiful piano and i was thinking "flame trees" and i went, 'hmmmm' ... don had a listen to the song and he was very gracious ... he just went 'yeah, okay' and went into the studio and played the piano, did two takes and it was fantastic, just beautiful. it was exactly what i wanted."