His real name is Raymond O'Sullivan; Gilbert matches better with Sullivan (see: Willow, Tit-Willow).
Kees Van Kooten & Wim De Bie [as 1948 in satirical Dutch tv series Hadimassa, out on their DVD Ons Zingt Ons in 2003]
Gerard Cox [idem; one year later also as 1973]
Andy Williams [title track lp]
Rob De Nijs [as 1948]
Biz Markie [landmark copyright case]
Gerard Cox-Joke Bruijs-Sjoerd Pleijsier-Mouna Goeman Borgesius [as Toen Was Geluk Heel Gewoon in the Dutch adaptation of comedy series The Honeymooners]
Vonda Shepard [in tv series Ally McBeal]