Legendary singer and guitarist Carlos Santana, 78, was largely unknown to mainstream audiences when he took the stage at age 22 for his now-iconic Woodstock ’69 performance. In a resurfaced and wild interview with journalist Dan Rather, the “Black Magic Woman” musician revealed that a drug trip—courtesy of the Grateful Dead’s Jerry Garcia—nearly derailed his historic set.

“I don’t even know how I walked, and next thing I know we’re playing this set, and I think I’m going by what Shirley MacLaine calls muscle memory,” he confessed.

“When we got to ‘Soul Sacrifice,’ I noticed that the neck of my guitar was like an electric snake. It wouldn’t stand still, you know. So I’m making some seriously ugly faces trying to keep it from slithering so much.”

Santana’s 11-minute performance of “Soul Sacrifice” is widely considered the standout of Woodstock ’69. Featuring a jaw-dropping drum solo by then-teenage drummer Michael Shrieve, the set catapulted Santana to international fame.

Fans relished Santana’s retelling of the moment in the comment section of the interview re-shared on social media, with one fan writing, “’Soul Sacrifice’ is the best performance ever. I will never tire of it.”

Many fans, however, found the humor in Santana’s confession with one writing, “aahahaha golden .”