In recent years, 7 string guitars are used for Rock, Heavy metal music and so on. However, the pioneer of 7 string guitar is Jazz guitarist George Van Eps. He is also called the Father of the Seven-String Guitar, has been inspiring the recent 7 string jazz musicians. The specification of NYL-7 is almost the same as NYL-2 such as body dimensions, fingerboard, pickguard, etc. but its neck shape is well thought out and improves playability, NYL-7 is also suitable for the guitarists who begin playing seven string guitars.