many rock and soul acts of the late 1960s first reached a large audience at
1960s in music British rock broke through to mainstream popularity in the United States in January 1964 with the success of the Beatles. "I Want to Hold Your Hand" was the band's first No. 1 hit on the Billboard Hot 100 chart, starting the British Invasion of the American music charts.[16] The song entered the chart on January 18, 1964, at No. 45 before it became the No. 1 single for 7 weeks and went on to last a total of 15 weeks in the chart.[17] Their first appearance on The Ed Sullivan Show February 9 is considered a milestone in American pop culture. The broadcast drew an estimated 73 million viewers, at the time a record for an American television program. The Beatles went on to become the biggest selling rock band of all time and they were followed by numerous British bands.[18]