The product is a vintage and antique sheet music featuring the song "Know You By Heart" from the M Stage Musical (Gene Kelly) BEST FOOT FORWARD. This sheet music is categorized under Musical Instruments & Gear, specifically in the Sheet Music & Song Books section. The format of this item is ideal for musicians or collectors looking to perform or add to their collection of musical scores from classic musicals. The genre of this song falls under Musicals, making it a valuable piece for fans of vintage musical theater.