EMI has signed a deal with YouTube that will allow its users to access videos by EMI artists.
EMI bands such as the Rolling Stones will be available on YouTube
It means all four of the world's major music firms are now YouTube partners.
The terms of the agreement should eventually allow users to incorporate recordings by EMI artists into their own projects.
The deal follows a string of lawsuits by companies who accuse YouTube of allowing its users to pirate their copyrighted works.
The biggest threat comes from entertainment giant Viacom Media which is suing YouTube for $1bn (£505m).
The US group - which owns MTV and Nickelodeon - claims that the website uses its shows illegally.
User generated content
"We're excited to add EMI Music's stellar roster of artists' content to our site and make it available to our community," said Chad Hurley, chief executive of YouTube.
Eric Nicoli, chief executive of EMI Group, said the deal would "offer consumers the best possible entertainment experiences" by using "innovative business models that will generate revenues for our business and our creators".
"Through this agreement EMI Music and its artists will be fairly compensated for their work," Mr Nicoli said.
EMI and YouTube have agreed to work together to develop ways in which EMI-owned recordings can be incorporated into user generated content by YouTube users.
News of the deal comes just 10 days after EMI agreed to be taken over by private equity group Terra Firma for £2.4bn.
Google bought the video-sharing website for $1.65bn (£883m) in October 2006.