After a month of rehearsals, Space Meat alumnus John Jennings joined

After a month of rehearsals, Space Meat alumnus John Jennings joined to create Pentagram’s dual-guitar “Mark II” lineup, but he was soon asked to leave the group and his position was filled by guitarist O’Keefe. After this lineup’s first rehearsal, Jennings called O’Keefe to tell him that he was leaving the group, citing a lack of interest in heavy music as his reason for departure. McAllister would become Pentagram’s guitarist for the next five years. McAllister would leave for California in 1980 to attend classes at the Guitar Institute of Technology , and Jennings would subsequently collaborate with Mary Chapin Carpenter during the 1980s and into the 1990s as her primary guitarist.