Quite possibly the biggest category, simply because of its early influences and the many paths this style of music has taken since its early beginnings in the 1940s. A sound of music that rose from the blues and country music styles, this is a beat-driven genre of music that is known for re-defining itself time and again, be it through its constant need to re-define 'normal' or the need to be constantly bucking the trend. Rock is a solid melody, sometimes uber-catchy hooks, other times insistent guitars with a message, or pared-down orchestras lifting the song up with a bevy of harmonies. This is your mother's favourite music, your nephew's and really, yours, and houses those time-and-again musicians you hold near and dear to your heart as well as the newbies singing their hearts out for you.