Abstract: A musical instrument leg support device for allowing the user of a guitar to more comfortably play a guitar while being seated. The musical instrument leg support device includes a flexible elongate member having a padded member and a non-slip cover member which completely encloses about the padded member; and also includes fastening members each having a strip member being securely attached to a respective end of the flexible elongate member and each having hook and loop fasteners securely attached to the strip member with the musical instrument leg support device being wrapped and fastened about the thigh of the user to prevent slippage of the musical instrument.