The Fly Away singer has penned a touching tribute to the late star, following his sudden death aged 57 last week (21Apr16). They shared a close friendship over the years, often playing music together, but one occasion in particular stands out for Lenny - recording their Rave Un2 the Year 2000 concert back in December, 1999.

While holidaying in the Bahamas over Christmas that year, Lenny received a call from Prince inviting him to his Paisley Park estate in Minneapolis. Despite the sub zero temperatures, Lenny agreed to fly out with his guitar and team in tow.

"I checked into the hotel and went over to Paisley Park," Lenny recalled to Rolling Stone magazine. "I said, 'Okay, let's do this. What time tonight?' Prince said, 'I don't know. Let's play it by ear.' His band is on call. There's a soundstage and a film crew. We hung around the studio for a while and his apartment there. I kept thinking, 'When are we gonna do this?'

"Cut to two days later. He's kept me awake the whole time. Man, I'm starting to fade and I'm still waiting to go do these songs. I'm just falling apart, ready to crash. At the exact moment where I'm starting to fall asleep he goes, 'C'mon man, we gotta do it now.' I was like, 'Now?' He's like, 'Yeah, right now. Grab your guitar. We gotta do it now!'"

Lenny pointed out that anyone watching the video may notice he appears "a little out of it" and low-energy. His voice wasn't in great form either having stayed up for so long without sleep, whereas Prince was full of life.

Spending several days at Paisley Park was an "incredible" experience for Lenny, who likens the stay to something out of a fairytale.

"It was like Willy Wonka and the Chocolate Factory, or the Wizard of Oz," he gushed. "It's this larger than life compound that is just his world. The minute you walk through the door you're in Prince's world. It's all about being creative. It's all about music. Everything you did there was recorded."