Popsugar Entertainment Netflix The Full Cast of Soundtrack on Netflix Meet the Full Cast of Netflix's Musical Drama Soundtrack 9 December 2019 by Amanda Prahl View On One Page Photo 8 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Megan Ferguson as Gigi Dumont Ferguson, previously seen in recurring roles on Casual and Grace and Frankie, plays Nellie's supportive best friend, Gigi. Previous Next Start Slideshow NetflixSoundtrackTV