Jonathan Cott, who shared a long professional and personal relationship with The Beatles' John Lennon, remembers the time he spent with the legendary singer and his wife Yoko Ono in his new book,"Days That I'll Remember: Spending with John Lennon and Yoko Ono."

After years of interviewing stars like Pete Townshend and Mick Jagger, European editor of Rolling Stone, Jonathan Cott, finally got the opportunity to interview his favorite star, John Lennon in 1968. This marked the start of a long friendship - both professionally and personally. Cott reportedly sat in for the recordings of The Beatles' White Album. Three days before Lennon was shot, Cott interviewed the legendary singer, becoming the last person to interview him. Now, in his new book "Days That I'll Remember: Spending with John Lennon and Yoko Ono", Cott remembers the time he spent with the couple.

Recalling the first day Cott sat in for a recording session of the band, the author remembers the other band members weren't too pleased as they hadn't been informed that Lennon was bringing someone with him and "cringed" at his presence. Cott says that while Paul McCartney recorded his proto heavy metal number "Helter Skelter", Lennon was working on his "Glass Onion." Cott calls the experience a "marriage of heaven and hell."

Cott also talks about his last interview with Lennon. He reveals he had been at Lennon's home for 9 hours and then accompanied him to the recording session of Yoko Ono's "Walking on Thin Ice," which later became very famous. The day Lennon was shot, he was carrying a tape of the final mix of the song in his pocket. Cott says it fascinates him that the "first date" Lenon and Yoko were on was a musical collaboration and their last date could somewhat be called a musical collaboration too.