M U S I C 
IS :::

MUSIC /'mju:zik/ IS ::: 1 the arrangement of sounds in pleasant patterns and tunes 
2 the art of doing this (Longman Dictionary of Contemporary English 1981)

"Music is the pleasant* noise that sounds like a melody." 
 (* = pleasant is something** that is really nice) 
  ** = a feeling of pleasure to the hearing

"What is music? Music to me is a collection of sounds that I hear in a certain fashion. 
It is made of sounds, maybe words and melodies. It is enjoyable, fun and is relaxing to me. 
It has airs, sounds and rhythm. When I listen to music, I can connect to the sound emotionally. 
It calms me. When I feel bad, there is certain music I can think to and work things out in my head. 
It can centre me. I can focus my mind after listening to it. It makes me happy. It can change my emotions. 
It also helps me to imagine how others can feel. Music can be pleasant to listen to. Some music can be 
irritating and piercing to hear. The tone may be harsh. I could then feel agitated. It can be beautiful too 
and inspiring, giving me hope." 

"What I think music is, is that it is sounds, rhythm* and beat. Music can be very enjoyable to listen to."
 (* how I would describe rhythm? Beat would be sound after sound** in systematic order 
> arrangement ) ** = repeat

"Music is any pleasing sound made by a creature (ie. Bird) or a musical instrument."

"What is music. Music is collective of sounds made to inspire you. It is also use in films telling you 
a little tale on what happened. There is music in videogame to demonstrate what happened. 
So if some tried to tell a story, music is for communicating. There are many different genres of music, 
that are pop, rock'n'roll, jazz, opera, classic, lyric, rap, hip'n'hop, melody, crys* and soul. 
It can teach you to dance and exercise. Videogames have music to give dancing karaoke, relaxing, 
beat'em'up, shoot'em'up, tale, playing for challenge for single and multiplayers. Vibration energizes 
the … of music/sound in videogame …"           
(*= cries)

"Music is various sounds"

"Any sound-situation where we accord attention becomes automatically musical."

"Music is sounds, tune / rhythm and style. Music is speaking in tune to satisfy ears."

… and John Cage, a composer, once upon a time said something like that: 
"Music is organisation of sound and silence."