Taylor Swift Makes Music History: New Single "I Knew It, I Knew You" Sets an All-Time Sales Record.

The international music industry has witnessed another historic milestone. American singer Taylor Swift has broken the record for the biggest pure sales week in modern music history with her new single, "I Knew It, I Knew You."

The song debuted at No. 1 on the major music charts, surpassing the previous record set by British artist Harry Styles.