In the 1940s many songs were hits for more than one artist,
this table lists eight songs that were hits for four artists. The year each
song was a hit is shown in the table. For example Jo Stafford had
a hit with Goodnight, Irene in 1950. Artist
"A" also had a hit with the same song in 1950 but
artists "B" and "C" didn't.
Who are the three unknown artists the seven other song titles, and which four
different years did they have hits with song "5".