Music is an art form with sound as a medium. There are 4 common elements of music:

1. Pitch (melody and harmony);
2. Rhythm (associated with tempo, meter, and articulation);
3. Dynamics, or sound strength;
4. Sonic qualities associated with timbre and texture.

V. Lenin, the Communist Russian revolutionary who led the October Revolution of 1917, about 100 years ago said that cinematography is the most important art for people. Of course, he meant new Soviet generation, which was under formation on the huge territory of the Soviet Union in the 20-30th of XX century. I am not a fan of bloody Vladimir Lenin at all, but these words were perspicacious by no doubt. Movie and video are among the most searchable key words on the Internet and the most popular social network web-sites are actually based on uploading, shearing and discussion of films videos, movies, and video clips. 

This is possible because of technical progress related to invention of mathematical algorithms which allows users to squeeze video image into relatively small files which could be easily distributed via Internet. Like in case of music files which also represent digital audio compression formats, these innovations actually revolutionized the sphere of visual arts with three consequences:

1. Very useful, fast, cheap (sometimes free) sharing, exchanging and downloading of media files, and thus movies and music by common Internet users.

2. Technology which scared video and music business giants – recording studious, publishers, film factories etc. They are loosing the distribution media (CD, DVD, etc.) and channels (CD, DVD shops and department) like Amazon.com. They have to modernize their business policy and adjust it to a new realities.

3. Issues, related music and video pieces authors copyright. These trends are also not so good since copying and distributions of their works have become so easy and accessible for millions of Internet users.

A sport is commonly defined as an organized, competitive, and skillful physical or mental (chess) activity requiring commitment and fair play. It is governed by a set of rules or customs. In a sport, the key factors are the physical capabilities and skills of the competitor when determining the outcome (winning or losing). Physical activity involves the movement of people, animals, and/or a variety of objects such as balls and machines. In contrast, games such as card games and board games, though these could be called mind sports, require only mental skills. Non-competitive activities such as jogging and rock-climbing are usually classified as recreation. Ancient Greeks, meaning the importance of physical active exercises used to say: Run if you want to be healthy, run of you want to beautiful, run if you want to be clever. 

Theatre (or theater) is a branch of the performing arts. While any performance may be considered theatre, as a performing art, it focuses almost exclusively on live performers creating a self-contained drama.

The first recorded theatrical event was a performance of the sacred plays of the myth of Osiris and Isis in 2500 BC in Egypt. The ancient Greeks began formalizing theatre as an art, developing strict definitions of tragedy and comedy as well as other forms, including satyr plays. Like the religious plays of ancient Egypt, Greek plays used mythological characters. The Greeks also developed the concepts of dramatic criticism, acting as a career, and theatre architecture.[6] In the modern world, these works have been adapted and interpreted in thousands of different ways to serve the needs of the time. Examples are offered by Antigone, used in 1944 by Anouilh to make a statement about the Nazi occupation of France, and by Brecht in 1948, likening Creon to Hitler and Thebes to defeated Germany.

Here you can find some data and statistics on the theater business in the US here

Literature is the art of written works. There are different genres of literature: like

Autobiography, Memoir, Spiritual autobiography, Biography, Diaries and Journals, Electronic literature, Erotic literature, Slave narrative, Thoughts, Proverbs
Fiction, Adventure novel, Children's literature, Comic novel, Crime fiction, Detective fiction, Fable, Fairy tale, Folklore, etc.

Literature could exist in the following forms: hard copies (books, magazines, etc.) in digital form (computer files) which could be displayed on the computer monitor (PC, Macintosh, or iPad), and in audio digital for,m which when played could be heard via loud speakers or headphones.

A video or computer games are an electronic games that involve interaction with a user interface to generate visual feedback on a video device. There is a program code behind any computer game. This code is installed either locally on a computer, game console, mobile telephone device, or on servers on the Internet and provides the online possibility to play with a computer solely or with other players through digital networks.

A video or computer games are an electronic games that involve interaction with a user interface to generate visual feedback on a video device. There is a program code behind any computer game. This code is installed either locally on a computer, game console, mobile telephone device or on servers on the Internet and provides online possibility to play with a computer solely or with other players through digital networks.

Definition: Painting is the practice of applying paint, pigment, color, or other mediums to a surface (support base). 
In art, the term describes both the act and the result, which is called a painting. Paintings may have for their support such surfaces as walls, paper, canvas, wood, glass, lacquer, clay, or concrete. Paintings may be decorated with gold leaf, and some modern paintings incorporate other material,s including sand, clay, and scraps of paper.