 Björk collaborated on seven tracks in total with Timbaland.Timbaland had stated that he intended one of the tracks he did with Björk to appear on his new solo album but this did not materialise.The lead-off single from "Volta", "Earth Intruders", is co-produced by Timbaland, as well as the second single "Innocence"; the album track "Hope" is co-written by Timbaland.