Here is another band from Chicago Riot Fest. They are called Foxtrott. This falls under that category of don't ever let them tell you your instrument is not cool. The band was a singer, a drummer and a french horn player.
They will try to tell you that, that your instrument is not cool. They tried to tell me that. I'm a tuba, banjo, cowbell, cigarbox guitar player. They will say the headstock is not right on your guitar and that you have the wrong amp that you don't have the right number of strings on your instrument. But really it's not them telling you that. It's their phone, their TV, their dead civilization that tells them what is so.
Try telling this girl her horn is not cool and should not be on stage at a big rock fest.