Yoko Ono received a songwriting credit for her late husband's classic "Imagine" on Wednesday from the National Music Publishers Association, 45 years after it was released.
In a 1980 BBC interview, Lennon confessed that he took the concept and the lyrics from Ono's book "Grapefruit" and used it to create the song "Imagine."
"Those days I was a bit more selfish, a bit more macho, and I sort of omitted to mention her contribution," Lennon said.
John Lennon and Yoko Ono share a moment in 1970.
Their son Sean Lennon celebrated by posting a photo of him and his mother at the event.
"Imagine" evoked a message of peace and unity and became one of Lennon's most iconic songs. Ono was married to the famous singer for more than 10 years before he was shot and killed by Mark David Chapman in December 1980.
People went on Twitter to congratulate the new co-writer of "Imagine."