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). The 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 recreations. Ancient Greeks meaning 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 made use of 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 in order 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, statistics on theater business in the US here

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

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
Fantasy (for more details see Fantasy subgenres; fantasy literature)
Gothic fiction (initially synonymous with horror)
Historical fiction
Horror
Medical novel
Mystery fiction
Philosophical novel
Political fiction
Romance novel
Historical romance
Saga, Family Saga
Satire
Science fiction (for more details see Science fiction genre)
Thriller
Conspiracy fiction
Legal thriller
Psychological thriller
Spy fiction/Political thriller
Tragedy
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 form 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 games. This code is installed either locally on computer, game console, mobile telephone device or on servers on Internet and provide on-line possibility to play with computer solely or with other player 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 games. This code is installed either locally on computer, game console, mobile telephone device or on servers on Internet and provide on-line possibility to play with computer solely or with other player through digital networks.

Definition: Painting is the practice of applying paint, pigment, color or other medium 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 materials including sand, clay, and scraps of paper.