Instagram or Twitter?

I use twitter to interact with my followers/subs if I need to. I also tweet an epic song everyday, which they also seem to like. But idk what to post on instagram usually, so I just take pics of places I go and then post them. I don't take selfies often (maybe like once a month) so... I don't post those either. Honestly, for a music promotion channel, instagram doesn't really have much use for me :p