music: What 50's song begins with a phone ringing & hello baby?

Questions

In 1959 Jack Benny (Violin) and Richard ---------- (Piano) play their famed duet. ?

In 1980 The "Who Shot JR" episode of "---------- " begins the tradition of season-ending cliff-hangers. ?

In 1906 International Radio Telegraphic Convention adopts "---------- " as new call for help. ?

In 1943 Lebanon gains independence from ---------- (National Day). ?

In 1963 President John Kennedy assasinated in---------- ; Lee Harvey Oswald is assumed to have been the assasin. ?