The 13 artists with the most No. 1 singles on the Billboard Hot 100

Bruno Mars joins the likes of Taylor Swift, Janet Jackson, The Beatles, and Michael Jackson with "I Just Might." ...

Only 88 songs have debuted at No. 1 in the history of the Billboard Hot 100 — here they all are

The Hot 100 chart measures success across genres. Drake has the most No. 1 song debuts in history, followed by Taylor Swift ...