Vocals and vocalists. They can be the secret weapon that elevates a piece of music into a higher realm, that gives a band a key component to their identity, that once heard you couldn’t imagine them without. They can be a deal breaker too — the ear sore that spoils the whole experience. Sometimes they’re just bland as a wet paper bag. But a voice is a voice. They all say something. They all have a message to convey (even when the message is “sha la la la la”).