The Blackout is a Welsh post-hardcore/alternative rock band from Merthyr Tydfil, formed in 2003 . Known for their energetic, party-style sound and dynamic dual vocalists Gavin Butler and Sean Smith, they quickly gained a reputation for lively, unpredictable live shows �. loudersound.com +4 Career highlights ◦ Debut EP The Blackout! The Blackout! The Blackout! released in 2006 via Fierce Panda, followed by their first full album We Are the Dynamite in 2007 �. en.wikipedia.org +2 ◦