I've come across a song by Ian Walker, 'Sing Me A Song Mr Bloom' - with a very singable chorus. Walker explains:

[1987:] Mr. Bloom is a character in the film 'Twilight Zone - The Movie'. He visits homes for old people and, magically, turns them into children again! (Notes Ian Walker, 'Flying High')

Could that be what you are looking for? I've got the lyrics on the sleeve and will dig them out if necessary. - Susanne