A long-lost guitar solo originally recorded for 'Here Comes the Sun' has been discovered after more than 40 years.

NME reports that George Harrison’s solo, which was ultimately left off the 1969 single, was unearthed by his son Dhani Harrison, as well as Beatles producer George Martin and his son Giles Martin during a visit to Abbey Road Studios.

Dhani and the Martins were listening to the original, multi-track recordings made for 'Here Comes the Sun' when they happened upon the solo. George Martin remarked that he had forgotten all about the electric solo, while Dhani said he never knew it existed. You can hear Harrison’s lost solo at about the 1-minute mark in the video below.

Beatles die-hards might also enjoy hearing some extra instrumentation that was ultimately discarded for the Abbey Road track.