Complex sentence: Original drummer Jon Barr was replaced by Bob Hall in 2010, and founding lead guitarist Billy Bibby left the band in the summer of 2014 and was replaced by Johnny "Bondy" Bond.
Split into simpler sentences: Original drummer Jon Barr was replaced by Bob Hall in 2010. Founding lead guitarist Billy Bibby left the band in the summer of 2014 and was replaced by Johnny "Bondy" Bond.