Great opera singers are versatile as well, and able to roll with adversity and adapt and overcome problems with good humor. Above all, it’s important for opera singers to always look for ways to improve. Professional singers are often extensively trained, highly skilled, and have a great sense of pitch and tone. They also rely on inherent singing abilities, such as a wide vocal range and nice vocal resonation. Singers are primarily self-employed and hired on a project basis, whether as consultants, performers, or judges in singing competitions.