Isolotto
un po 'di musica
"topolino". Don't use title case, however: it would mean "Mickey Mouse"...
In Italian a translation is piccolo principe. Always remember that depending on the context of your sentences, the translation can vary. There may also be slang terminology if you were to travel to...
piccola Stella
Piccolo bambino [for a boy]Piccola bambina [for a girl]