Complex sentence: The album was recorded by Andy Miller (producer of Mogwai, Arab Strap, Sons and Daughters, Life Without Buildings, Scout Niblett and The Delgados), a friend and mentor of the band since their earliest rehearsals.
Split into simpler sentences: The album was recorded by Andy Miller, producer of Mogwai, Arab Strap, Sons and Daughters, Life Without Buildings, Scout Niblett and The Delgados. Miller had been a friend and mentor of the band since their earliest rehearsals.