Jack Johnson and IV of Spades land in the top five of the TikTok Billboard Top 50, but who's at No. 1? Keep watching to find out! Tetris Kelly:TikTok’s got a new leader, a versatile track and a ...

Jack Johnson's “Upside Down” gives the musician his first top 10 hit on the TikTok Billboard Top 50, where it launches at No. 4—the loftiest entry this week.