宣告独立
The second single from "Volta" was originally meant to be "Declare Independence", but due to the worldwide success of "Volta" Björk had to perform more international promotion work than her label One Little Indian had originally planned, meaning that the previously planned video shoot for "Declare Independence" with Michel Gondry in London could not take place. The deadline for the music video contest for "Innocence" (originally announced on 19 March 2007) was then brought forward a month to 10 June 2007 so as to provide a finished video able to coincide with the July release originally planned for Declare Independence. "Innocence", the other Timbaland-co-produced track, was released digitally across the globe on 23 July 2007. It was announced that the release would be available in the US on 31 July 2007, though this date was moved later.