Love Songs (in the Key of Gallagher) Fiona reunites with Gus. Frank works to keep Bianca happy. Season finale. Details Casts Title Love Songs (in the Key of Gallagher) Genres Drama Comedy Release Date 2015-04-05 Episode Runtime 00 Hours 44 Minutes Season Number 5 Episode Number 12 Production Companies John Wells Productions, Warner Bros. Television, Showtime Networks Emmy Rossum Fiona Gallagher William H. Macy Frank Gallagher Jeremy Allen White Lip Gallagher Ethan Cutkosky Carl Gallagher Shanola Hampton Veronica Fisher Steve Howey Kevin Ball Emma Kenney Debbie Gallagher Cameron Monaghan Ian Gallagher Noel Fisher Mickey Milkovich Emily Bergl Sammi Slott