Patti Labelle has established herself as a regular tribute performer, honoring legendary artists like Whitney Houston, Prince, Aretha Franklin and more. Her experience made her the ideal candidate to pay respect to the late Tina Turner, who died last month, at Sunday’s BET Awards. But while singing on stage, Labelle forgot the lyrics to Turner’s 1989 song “The Best.”

The performance started well with Labelle standing in front of a set that spelled out the name “Tina” and displayed pictures of the rock and R&b singer. But then Labelle began to noticeably struggle through the song as she didn’t know the lyrics.

Over the years, Labelle has been successful singing off of teleprompters in her tribute performances, but this time, she couldn’t see the lyrics. “Whatever – I can’t see the words, I don’t know,” she explained to the audience before humming some of the notes.