A four-stringer is a type of stringed instrument that has four strings. The most common examples are the ukulele (UKE) and the VIOLA (VIOLA). The ukulele is a small, guitar-like instrument that originated in Hawaii and is typically strummed or plucked with the fingers. The VIOLA is a larger stringed instrument that is part of the violin family and is usually played with a bow. Both instruments have four strings and are considered four-stringers.