who has written the most number one hits
Max Martin Martin has written or co-written 22 Billboard Hot 100 number-one hits, most of which he has also produced or co-produced, including Katy Perry's "I Kissed a Girl" (2008), Maroon 5's "One More Night" (2012), Taylor Swift's "Blank Space" (2014), and The Weeknd's "Can't Feel My Face" (2015). Martin is the songwriter with the third-most number-one singles on the chart, behind only Paul McCartney (32) and John Lennon (26).[3] In addition, he has had the second most Hot 100 number-one singles as a producer (20), behind George Martin, who had achieved 23 by the time of his death.[3]