Deep Blue is the third album by Australian metalcore band Parkway Drive. It was recorded in Los Angeles, California and was released on 25th June 2010 through Epitaph Records. The album debuted at number 2 on the ARIA charts and at number 39 on the Billboard 200 chart. It is Parkway Drive's most critically acclaimed release, having a three-year separation between their previous album, Horizons. It won the 2010 ARIA Award for Best Hard Rock/Heavy Metal Album and has been certified gold in sales by the ARIA.
Deep Blue has received critical acclaim. The NewReview gave the album a 4.5 out of 5 and stated "Deep Blue is truly a groundbreaking album. Parkway Drive has unfurled a masterfully crafted, distinct, and intensely heavy work of art which has set the standard for all others in the industry." Rock Sound ranked it as the 42nd best album of the year, stating that the album was "more organic, less restricted and intriguing in its use of dynamic range, Deep Blue provides all the anthems required to keep the fan base devoted with enough room for the occasional deviation or excursions into the metallic wild that may just turn a few new heads in their direction." Sleepwalker came in at Number 97 in the Triple J Hottest 100, 2010
The recording of the album was done during March – April, the writing was done in the band’s hometown of Byron Bay over six months. on the announcement the album on Parkway Drive Myspace blog vocalist and lyricist Winston McCall explained the narrative running through Deep Blue "It’s basically about the search for truth in a world that seems to be devoid of that," . "The story is told through the eyes of a man who wakes up and realises that his life is a lie and nothing he believes in is real. So he tries to find the truth within himself and his journey takes him to the bottom of the ocean and back again. The song 'Alone' is a summary of the story Deep Blue tells.". .