The Big Four are the four largest music companies in the industry - Universal Music Group, Sony Music Entertainment, Warner Music Group, and EMI Music Publishing. They promote music as well as other entertainment. Universal was founded in 1934 and is the largest, while Sony was formed through mergers and now owns Sony Music Entertainment. Warner Music Group was founded in 1958 and owns labels like Warner Bros Records and Electra Records. EMI Music Publishing is the fourth largest and was founded in 1931 in the UK.