Complex sentence: Grace covered Wright's "Sunday Love Songs" on BBC Radio 2 during December 2007, January 2008 and April 2010, when Wright was forced to remain in the United States due to the volcanic eruptions in Iceland of that month.
Split into simpler sentences: Grace covered Wright's "Sunday Love Songs" on BBC Radio 2 during December 2007 and January 2008. She also filled in during April 2010, when Wright was forced to remain in the United States due to the volcanic eruptions in Iceland of that month.