The Monkees‘ “I’m a Believer” was a huge hit in the 1960s. It topped the Billboard Hot 100 longer than any of The Beatles’ songs except for one. Paul McCartney said he wrote a bad lyric for the Fab Four song in question.
During a 2016 interview with Entertainment Weekly, The Monkees’ Micky Dolenz discussed playing “I’m a Believer” in the 1960s. “I do remember lots of snatches of touring back then,” he said. “Unbelievable. No monitors. Screaming. Screaming, screaming.”
Playing had its challenges. “[When we played ‘I’m a Believer’] I couldn’t hear myself,” he said. “I just had to pound away. Even to this day, I sing with my eyes closed, because I had to close my eyes and hit myself in the leg to keep time on the drums. I had a big bruise.”
Source: cheatsheet.com