"Fingerpicking" (also called "thumb picking", "alternating bass" or "pattern picking") is a term that is used to describe both a playing style and a genre of music. It falls under the "fingerstyle" heading because it is plucked by the fingers, but it is generally used to play a specific type of folk, country-jazz and/or blues music. In this technique, the thumb maintains a steady rhythm, usually playing "alternating bass" patterns on the lower three strings, while the index, or index and middle fingers pick out melody and fill-in notes on the high strings.