Complex sentence: Overdubs were done in various other studios, one of which was Matthew Embree's studio, referred to as "The Elizabethan", a studio which is used by many of their MDB labelmates, such as The Return.
Split into simpler sentences: Overdubs were done in various other studios, one of which was Embree's. Referred to as "The Elizabethen", the studio is used by many of RxB's MDB labelmates, such as The Return.