 Depending upon availability of the various members, the twosome would either tour as an electric-based aggregation or in a semi-acoustic format with Doerge and Lindley.When CSN reunited on a more-or-less permanent basis in 1977, Doerge followed the group to Miami for the "CSN" sessions, contributing to several songs and collaborating on writing the song "Shadow Captain" with Crosby.Crosby and Doerge continued to collaborate regularly until the early 1990s.