Complex sentence: King Niko's first performance was May 20th, 2009 and they recorded their first EP in August 2009, "Gorgeous and Gory," which was released in October 2009.
Split into simpler sentences: King Niko's first performance was May 20th, 2009. Their first EP, "Gorgeous and Gory," was recorded in August 2009 and released in October 2009.