Adele didn't flop with her '21' era, but many of her '19' singles didn't do well.
So I could say every artist has flopped/underperformed at least once in their career.
Bruno Mars continues his perfect streak of reaching the Pop Songs airplay chart top 10, as "Treasure" lifts 11-10
The song is Mars' 11th top 10 in as many appearances, extending his record for the most career-opening top 10s in the tally's 20-year archives/ Billboard
He has 11th top 10 songs, all of his solo singles have reached the top 10 on BB Hot 100, and all of his released songs featured or not are multi-platinum hits.
Not to forget he's heading for his second 2xplatinum album in the US.