Complex sentence: Mickey Finn also of the original T. Rex joined them on recordings and some shows, the last being an all-star line-up including Zoot Money and Finn; the concert was filmed by a small crew at the 100 Club in London.
Split into simpler sentences: Mickey Finn also of the original "T. Rex" joined them on recordings and some shows. The last being an all-star line-up including Zoot Money and Finn; the concert was filmed by a small crew at the 100 Club in London.