The Hawaiian guitar, also known as the slack-key guitar, is a unique style of playing that originated in Hawaii. It is typically played in an open tuning, allowing for a distinctive sound characterized by its gentle, melodic tones. Musicians often use a fingerpicking technique, which adds to the instrument's soothing quality. This guitar style is closely associated with traditional Hawaiian music and culture. The Hawaiian steel guitar, another variation, uses a metal slide to create a smooth, gliding sound. Both styles have influenced various genres, including country and blues, showcasing their versatility and appeal.