YouTube hitmakers Vazquez Sounds comes bounding in at No. 17 on Billboard's Social 50 chart, capping a wild month for the Mexican kid trio. It marks the second-highest debut ever on the chart since it launched a year ago. Only Rebecca Black, of "Friday" fame, bowed higher -- at No. 9.
The chart's rankings are determined by activity monitored on YouTube, Vevo, Facebook, Twitter, MySpace and iLike, using a formula that blends weekly additions of friends/fans/followers along with weekly artist page views and weekly song plays.
Vazquez Sounds (comprising siblings Abelardo, Gustavo and Angie Vazquez, whose ages range from 10 to 15-years old) made waves on YouTube with its cover of Adele's "Rolling in the Deep." Since it was uploaded to the trio's YouTube channel on Nov. 10, the clip has racked up more than 18 million views.