Music bands become family. They feel the souls of one another more than other groups of people do. That's the nature of music, it releases the soul in such a vulnerable way, so honest and real. Then there is all the time they spend together, the number of times they fall out and need to forgive one another. All those emotions. All those memorable times spent together. For better or worse, that makes them kin.
So many creatives in one place, that music band, they were either gonna explode the garage with their energy or explode on stage and take the world by storm.
So music bands fight. Not them. Every ounce of creative energy went into creativity not animosity. In the end, that's what made them great. There was no time for fighting each other, only for fighting the good fight, for getting their message out there. In those lyrics was their immortality and the reason they were so beloved.