She debuted on GTO with "Please Tell Him That I Said Hello", written by Mike Shepstone and Peter Dibbens. Within a month of its release in October 1974 it was #7 in Ireland. It took until the new year before making its UK chart debut in January. Boosted by "Top of the Pops" performances on 6 February and 13 March, it climbed to #8 on 15 March 1975. This UK success gave the track a resurgence of popularity in Ireland where it rose to #7 again, this time in February. She also recorded a German version of the song. "Spiel nicht mit mir und meinem Glück" was a #27 hit in that country the same year. Scallon made a number of foreign singles, such as "Wenn ein Mädchen verliebt ist" (German, 1971), "Tu Me Dis I Love You" (French, 1975), and a Japanese version of "It's Gonna be a Cold Cold Christmas" in 1976.