MySpace has lost 12 years' worth of music.
The original social networking site has been forced to issue an apology on its website after a "server migration" caused the loss of audio, pictures and videos posted on users' profiles "more than three years ago".
In a statement, they said: "As a result of a server migration project, any photos, videos, and audio files you uploaded more than three years ago may no longer be available on or from MySpace," the firm said in a statement.
"We apologize for the inconvenience. (sic)"
MySpace was responsible with launching the careers of musicians including Arctic Monkeys, Lily Allen, Kate Nash and many more.
Andy Baio, who helped launch the network via a Kickstarter campaign, has claimed that the losses could be as much as 50 million tracks by 14 million artists.
He also suggested that the data loss may have been done on purpose.
He tweeted: "I'm deeply skeptical this was an accident. Flagrant incompetence may be bad PR, but it still sounds better than "we can't be bothered with the effort and cost of migrating and hosting 50 million old MP3s. (sic)"
Chris DeWolfe, Tom Anderson and Jon Hart co-founded MySpace in 2003.
It was bought by Time Inc. in 2016.