Five Americans

Five Americans was a 1960s American band, most famous for the song "Western Union", which reached No. 5 in the U.S. Billboard chart and was their only single to chart in the Top 20. In Casey Kasem's "Book of Records" category of most repetitive word or phrase in a Hot 100 top 10 hit, "Western Union" holds the record (in this case, the two 40-fold and one 50-plus-fold repetition of the imitative word "dit").