On the eve of what would’ve been the late John Lennon‘s 81st birthday comes word that “Imagine,” the classic peace anthem Lennon co-wrote with wife Yoko Ono, has been certified triple Platinum by the RIAA for sales of three million units in the U.S.

“We are thrilled to present this award to Yoko for John & Yoko Ono Lennon’s ‘Imagine,"” says Universal Music Enterprises president Bruce Resnikoff. “‘Imagine’ remains a timeless global anthem, and John & Yoko’s message of peace is just as relevant today as when it was first written.”

Ono recently said of the inspiration for “Imagine,” “John and I were both artists and we were living together, so we inspired each other. The song ‘Imagine’ embodied what we believed together at the time. John and I met — he comes from the West and I come from the East — and still we are together. We have this oneness and ‘the whole world would eventually become one’ is the sense that we will all be very happy together.”

“Imagine” and the album of the same name on which it appears were released 50 years ago this past September 9.

As has become an annual tradition to mark Lennon’s birthday on Saturday, the Imagine Peace Tower, the memorial art piece Ono conceived as a tribute to her late husband in Reykjavík, Iceland, will be illuminated at 4 p.m. ET, and will remain lit until December 8, the anniversary of John’s death. You can check out a livestream of the tower at ImaginePeaceTower.com.

Coinciding with the lighting of the tower, a special edition of Tim’s Twitter Listening Party, hosted by U.K. radio host and musician Tim Burgess, will be held at 4 p.m. ET. The show will present the recent “Ultimate Mixes” version of the Imagine album.

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