Original sentence: Although the band had recorded a full album's worth of material in LA, they were not satisfied that Feldmann had produced the album they wanted and so the recordings were shelved and the band requested that Bob Rock, producer of Liberation Transmission, worked with them again in March 2008
Edited sentence: Although the band had recorded a full album's worth of material in LA, reportedly spending over £500,000, they were not satisfied that Feldmann had produced the album they wanted.The recordings were shelved, and the band aprroached Bob Rock (producer of Liberation Transmission) in March 2008 to produce the album