While webcast concerts and performances swiftly became commonplace by the end of the 1990s, there had to be pioneers somewhere in earlier years, and FSOL was among them. Instead of touring for the Lifeforms album in 1994, they instead set up a series of appearances on a variety of radio stations, as well as concert dates involving broadcasting to specific venues. ISDN, named after the high-speed connection that made these ventures possible, compiles a variety of cuts from four different sessions, including one with Robert Fripp. All four were live performances, with only new material appearing on ISDN itself, making it a fine standalone collection of intrinsic value beyond its gee-whiz factor. While not a cohesive listen like Lifeforms by default -- the selections aren't organized in chronological fashion -- all are edited together to provide a reasonable enough simulation of a standalone performance. Stylistically the duo explore both the experimental reaches of Lifeforms' unsettling ambient approach and the rougher sounds which would come to dominate on Dead Cities.