Complex sentence: The single was due to be released on 19 August 2007 but has since been pushed back until September and will be the first song taken from his second album, which is due for release in autumn 2007.
Split into simpler sentences: The single was due to be released on 19 August 2007 but has since been pushed back until September. It will be the first song taken from his second album, which is due for release in autumn 2007.