Answer:
If I was on the stage about to play my favorite instrument for a massive crowd it would make me feel nervous and excited. I would feel nervous because I am playing in front of a bunch of people watching and listening to me. I would feel excited because I get to play what I love and show everyone why i love it. That is what i would feel if I was playing my favorite instrument in front a massive crowd.
Explanation:
this is the best i got sry
It could be both, maybe they hurt themselves because they want to call some attention or it could also be their way to feel better with themselves
An expression of care and direction given in a sattle and absolute manner