Complex sentence: In early 2005, Matt Goodwin and Spencer Mertel left the band after the EP and were replaced by Andy Brookins and Elan Wright, soon after keyboardist Jackson Kellock joined the band making Danger Radio a six man band.
Split into simpler sentences: In early 2005, Goodwin and Mertel left the band and were replaced by Andy Brookins and Elan Wright. The keyboard player Jackson Kellock joined soon after, making Danger Radio a six man band.