A rare compilation of almost 60 unheard recordings from The Beatles discography is set to be exclusively released on iTunes this week.

The Beatles’ Bootleg Recordings 1963 is reportedly to be released due to stop the expiration of copyright protection; EU law protects songs for 70 years after they are recorded, but only if they get an official release. Otherwise, copyright lasts 50 years. The collection will contain studio outtakes, new songs and alternative versions of Beatles classics.

According to sources, should the remaining members of the band chose not to release the recordings by 31st December, theoretically other labels could release them and profit from the recordings.

The group have historically had a turbulent relationship with iTunes, taking the legendary rock band almost a decade to release their recordings on the platform. Upon release (in November 2010), the released catalogue went on to sell almost 500,000 albums globally within its first week.