Complex sentence: The album's first single, "Sea Within a Sea", was released as a digital download-only on 17 March 2009, together with a music video directed by Douglas Hart which was posted on the band's website on the same day.
Split into simpler sentences: The album's first single, "Sea Within a Sea", was released as a digital download-only on 17 March 2009. A music video for the song, directed by Douglas Hart, was also posted on the band's website on the same day.