Complex sentence: It's Only Just Begun... was the first Solution album to be self-produced, though they were assisted by Phil Dunne, who had engineered their previous albums "Cordon Bleu" and "Fully Interlocking".
Split into simpler sentences: It's Only Just Begun... was the first Solution album to be self-produced. They were assisted by Phil Dunne, who had engineered their previous albums "Cordon Bleu" and "Fully Interlocking".