INDUSTRY: The Big 3

1. Universal Music Group
is an American global music corporation that is a subsidiary of the French media conglomerate Vivendi. UMG's global corporate headquarters are located in Santa Monica, California. UMG have many subsidiary record labels such as Astralwerks, Island Records, Interscope Geffen A and M records, Capitol Music Group, Republic Records, Def Jam Recordings, Caroline Recordings etc. 

Some examples of artists with UMG are Halsey, Astrid S, U2, Elton John, Lorde, Lady Gaga, Eminem, Post Malone, The Weeknd, Kanye West, Sam Smith, Logic, Katy Perry, Imagine Dragons, Lana Del Rey, Shawn Mendes etc. 

2. Warner Music Group
Warner Music Group (WMG) is an American multinational entertainment and record label conglomerate with it's headquarters in New York City. It is the third largest record label in the global music industry, next to Universal Music Group (UMG) and Sony Music Entertainment (SME), being the only American worldwide music conglomerate. It was formerly owned by Time Warner. The company was publicly traded on the New York Stock Exchange until May 2011, when it announced its privatisation and sale to Access Industries, which was completed in July 2011. With a multibillion-dollar annual turnover, WMG has operations in more than 50 countries throughout the world.

The company owns and operates some of the largest and most successful record labels in the world, including its subsidiary labels: Warner Bros. Records, Parlophone Records, Atlantic Records. WMG also owns Warner/Chappell Music, one of the world's largest music publishers.

Some examples of artists with WMG are Dua Lipa, Ed Sheeran, Charli XCX, Skrillex, Clean Bandit, Anne-Marie, Bruno Mars, Rita Ora, James Blunt, All Time Low, Charlie Puth, Melanie Martinez, Wiz Khalifa etc.

3. Sony BMG
Sony BMG Music Entertainment was a multinational record label, which was a 50–50 joint venture between the Sony Corporation of America and Bertelsmann Music Group. The revived Sony Music Entertainment, is 100% owned by the Sony Corporation of America, following Sony's buyout of the remaining 50% held by Bertelsmann AG. BMG was instead rebuilt as BMG Rights Management on the basis of 200 remaining artists. It's headquarters are based in New York City, USA. 

It has ownership and distribution of it's subsidiary recording labels such as Arista Records, Columbia Records, Epic Records, J Records, Mchenry Records, Jive Records, RCA Victor Records, RCA Records, Legacy Recordings, Sonic Wave America etc. The merger affected all Sony Music and Bertelsmann Music Group companies worldwide except for Japan, where it was felt that it would reduce competition in that country's music industry significantly.

Some examples of artists with WMG are Justin Timberlake, Camila Cabello, Meghan Trainor, G-Eazy, Foster The People, The Chainsmokers, DJ Khaled, Christina Aguilera, A$AP Rocky, ACDC, Calvin Harris, Martin Garrix, Britney Spears, Bring Me The Horizon etc.

Labels outside of these three major labels are referred to as independent labels (or "indies"). 

INDUSTRY: Vinyl Revival

I did some research into vinyls and how they have been revived in the last 10 years. I first looked on wiki and found out that the vinyl revival is the renewed interest and increase in sales of vinyl records and that it has been taking place in the Western world since around 2007.

Source - https://en.wikipedia.org/wiki/Vinyl_revival

Vinyl records are in an anologue format and made of polyvinyl chloride. They were the main vehicle for the commercial distribution of pop music from the 1950s all the way until the 1980s-1990s when they were largely replaced by the Compact Disc (which were mainly in jewel cases - plastic casing). Since 2000, due to digitisation, CDs have been partially replaced by digital downloads. However, in 2007 vinyl sales made a sudden small increase. By early 2010 it was growing at a very fast rate. In some places, vinyl is now more popular than it has been since the late 1980s, though vinyl records still only make up a percentage of less than 6% of overall music sales.  

Along with the steadily increasing vinyl sales, the vinyl revival is also clear in how there is a renewed interest in record shops (evident through how there has been the creation of the annual worldwide Record Store Day), how music charts have been created solely to vinyl and to an increased output of films dedicated to vinyl records and their culture. 

Though many sales in vinyl are of modern artists with modern style or genres of music, the revival has also sometimes been considered to be part of a greater revival in retro style, since many vinyl buyers are too young to remember it being a primary music format. This can link into Simon Reynold's 'Retromania' theory. 

In June 2017, Sony Music announced that by March 2018 it would be producing vinyl records for the first time ever since stopping the production of them in 1989. After reporting the decision, the BBC stated that "Sony's move comes a few months after it equipped it's Tokyo studio with cutting lathe, used to produce master discs needed for manufacturing vinyl records" but added that "Sony is even struggling to find older engineers who know how to make records".