Complex sentence: In late 2008, The Pretenders released the album "Break Up the Concrete" with Chambers being replaced by Jim Keltner, although Chambers remained an official member and played with the band on live dates.
Split into simpler sentences: In late 2008, The Pretenders released the album "Break Up the Concrete" with Chambers being replaced by Jim Keltner. Although Chambers remained an official member and played with the band on live dates.