If only one word could define the Everly Brothers it would be: HARMONY
For it would influence so many other musical/vocal groups that would follow them. In 1958 All I Have to Do Is Dream was the only single ever to be #1 on all of Billboard’s singles charts at the same time. In the UK it remain #1 for 6 weeks, 21 weeks on the singles chart. #1 R&B & Country.