I have Samsung Galaxy A50. I installed Spotify and used voice command "play music" in Bixby. Bixby doesn't understand that command and redirects me to capsules under Bixby. I even installed Samsung Music. Still, it's not working. I contacted Samsung twitter (US). They directed many things and also told me to set Spotify as my default application. Unfortunately I can't find any option to set default music app for my device. After putting one MP3 file, then I was able to set Samsung Music as default player while tried accessing that music file. With it, the Bixby is not not able to play music with my voice command. However I can't able to set Spotify as my default music application. The option is not coming. Please help.