A singer is an artist or performer who uses numerous techniques and training to create a vocal song. Singers train regularly and appoint professional voice teachers to aid them in refining their craft. Singers might also compose their music or perform on music composed by others. Singers also work as music teachers or voice coaches and sing to pay their bills. 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.