Question: who sang don't believe me just watch

title: Uptown Funk
text: The song became the first to crown the Hot 100 and its three main component charts for nine weeks ( the previous record was held by Meghan Trainor 's `` All About That Bass '' , which did so for two weeks ) . By spending a seventh week at number one on the Billboard Hot 100 , it became Mars ' longest command at the top position ( among his six number - ones ) . It also became one of the longest running number - one singles in Billboard 's Hot 100 history and also the second longest - running number - one single of the 2010s decade , by topping the chart for 14 consecutive weeks , making it the joint third - longest number - one single in Hot 100 history . This surpassed the previous record set by Robin Thicke with his 2013 single `` Blurred Lines '' , featuring Pharrell Williams and T.I. , which reigned at number one for 12 weeks . After its fourteenth week , it was replaced by Wiz Khalifa and Charlie Puth 's `` See You Again '' . The song stayed in the top three of the Billboard Hot 100 for 21 weeks , a record previously owned by the 1999 single `` Smooth '' by Santana and Rob Thomas . On 5 June , `` Uptown Funk '' spent a 25th consecutive week inside the US top 5 , equalling the all - time record set by LeAnn Rimes with `` How Do I Live '' in 1997 ( this was surpassed on March 11 , 2017 when `` Closer by The Chainsmokers and Halsey ranked in the top five for a twenty - sixth nonconsecutive week ) . `` Uptown Funk '' spent 31 weeks in the top - 10 , with the run ending in the issue dated 11 July 2015 , the longest - running top - 10 single after aforementioned `` How Do I Live '' as well as `` Closer . '' As of September 2017 , `` Uptown Funk '' has sold 7.8 million copies in the United States .