Rage and... Blood curse?

Hey so I am building a barbarian totem warrior level 4 and multiclass to blood hunter lycan level 4 for total of being level 8. I'm just wondering, could you still be raging and use blood curse and crimson rites? since I'm not sure if blood curse are consider as spells or magic and barbarian while raging can't use or concentrate on spells. any help clearing this would help.

Blood curse is fine but dear god get a 5th level in one of those classes  and 2nd attack lol.

yes I'm kinda new with the blood hunter class.  I level up my barbarian to level 5 lol