Niall Horan gave it his all but even he had to mumble his way through finishing some of these song lyrics.
Taking on Capital FM's Finish The Lyric challenge recently, Niall nailed Dua Lipa's Don't Start Now, B*Witched's C'Est La Vie and of course, his own song.
Other hits didn't come as easily to Niall's memory, however.
The former One Direction star had to rely on the classic singsong trick of mumbling over some unknown lyrics to get him to the next line in songs like Nicki Minaj's Starships and Ariana Grande's Problem.
The Mullingar man clearly had a great time doing the challenge on his promotional tour of his new album, Heartbreak Weather, which is scheduled for release later this month.
Niall is currently preparing for the US leg of his world tour before he returns to Europe later this year.
Niall will be back in Ireland at the end of October, with dates in the diary for Belfast (October 27) and Dublin (October 30).
He's also recently teased a new song that is being written by himself and Lewis Capaldi which, although in the early stages, sounds like it will be a must-listen when finished.