A guitar is an instrument that has been around for many years and the modern guitar has evolved from a variety of ancient stringed instruments to become what it is today. The modern guitar traces it origins back to Spain in the 16th century but it wouldn't be till centuries later when the electric guitar would be popularized by jazz guitarist Charlie Christian in the 1930s. From there, the electric guitar would go on to become one of the most common musical instruments used in bands today.