Singer-songwriter is a term that refers to performers who write, compose, and sing their own material including lyrics, melodies, often providing the sole accompaniment to an entire composition or song.[citation needed] This form of artistic expression is very common among performers that are less well-known than pop artists. Some of these artists depend on word of mouth and extensive touring to garner a fan base and commonly appear at house concerts, coffee houses, folk clubs, and festivals. Nevertheless, a number of well-known performers may still in fact write some of their own songs and, though being both a singer and a songwriter, are not sufficient to be a singer-songwriter.