Simplify the following text for a Grade 11 native English-speaking person.
Original: Released in February 2003 , 100th Window was written and produced by Del Naja and Neil Davidge , and features vocals from Horace Andy and SinÃ ad O'Connor , as well as an imperceptible appearance by Damon Albarn .
Simplified: Released in February 2003 , 100th Window was written and produced by Del Naja and Neil Davidge , and features vocals from Horace Andy and SinÃ ad O'Connor , as well as one appearance by Damon Albarn .