Pros
Fun place to work when you're young and in a band. You're not going to make a ton of money, but you have access to the newest gear as well as some great connections in the local music scene. Plus you kinda feel like a rock star when you walk into a place you've never been before and are recognized as "the GC guy!"
Cons
Very different place than it used to be. Commission caps at 3% of your GS and in order to get that you need to have over $500 sales per hour, so unless you're in a high volume store or it's the holidays, good luck making any real money. You're expected to repack and resell returned items and you're encouraged to sell the store branded goods because of the huge margin. Forced to sell warranties that come stock through other companies and employees are encouraged to lie to customers about how they are used and what they cover. Management doesn't care about anything but hitting their own numbers and everything on the floor is very micromanaged. I was forced out after more than a decade because they could replace me with 3 part timers for the same amount of hours/less commission paid out than I cost.