The first half of BoJack Horseman 's sixth and final season has BoJack (Will Arnett) trying something he hasn't tried before: getting sober. Throughout these eight episodes, BoJack tries to find the source of his addiction, while also learning to takes responsibility for the terrible things he's done in his life. While this is new territory for the famous horse,the soundtrack for BoJack Horseman season 6 is full of familiar sounds from previous seasons including BoJack's theme song and the end credit reminder of just how famous the Horsin' Around star was back in the '90s. But, this time around the Netflix series also includes a few emotional music cues that help push the season forward.