Definitions of Bach:

• noun:   the music of Bach

  Example: "He played Bach on the organ"

• noun:   German baroque organist and contrapuntist; composed mostly keyboard music; one of the greatest creators of Western music (1685-1750)
• verb:   lead a bachelor's existence
• name:  A surname (rare: 1 in 33333 families; popularity rank in the U.S.: #3620)