Eric Clapton's new album I Still Do, due out May 20, boasts a very special guest appearance from beyond the grave.

NME reports that the I Still Do track "I Will Be There" features vocals and guitar by George Harrison, who's credited as Angelo Mysterioso — a pseudonym he used previously for his cameo appearance on Cream's Goodbye album in 1969.

As fans are well aware, Clapton and Harrison went way back — not just due to their tabloid-friendly dueling affections for Pattie Boyd, which inspired Clapton's Layla and Other Assorted Love Songs LP, but musically too. Clapton contributed lead guitar work to Harrison's "While My Guitar Gently Weeps" on the Beatles' White Album, and they played together periodically over the years, with Clapton guesting on Harrison's Live in Japan and Harrison returning the favor with an appearance on Clapton's 1989 album Journeyman.

Harrison's "I Will Be There" contributions arrive nearly 15 years after his death and serve as one among a relatively small assortment of posthumous releases from the former Beatle — a group that includes his final album, 2002's Brainwashed.

As previously reported, I Still Do marks Clapton's first solo album of new original material since 2013's Old Sock, and continues his long tradition of blending a few self-penned numbers with a selection of covers. The album, which is available for pre-order now, reunites Clapton with his former producer Glyn Johns, who was behind the boards for some of his best-selling albums; it'll be the duo's first collaboration since the late '70s, when they worked together on 1977's classic Slowhand LP and its follow-up, Backless.

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