Hello!

At 56'50", the Itsi Bitsy Teeny Weeny section begins, even with a German-speaking cover version sung by Caterina Valente - which is literally half of the story:
That cover version was actually credited to "Club Honolulu", an alias for said Caterina Valente and her brother Silvio Francesco.
See https://www.discogs.com/Club-Honolulu-Itsy-Bitsy-Teenie-Weenie-Honolulu-Strand-Bikini/release/702219 where you also see the single cover - "Club Honolulu" seems to be stated as the band name, "Caterina und Silvio" are also listed (probably as the actual singers).

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Let me present you another German-speaking cover version - a cover version of the cover version, so to speak.

In 1987, the band "Die Roten Rosen" ("The red roses") recorded and released their cover album titled "Never Mind the Hosen, Here's Die Roten Rosen" - not surprisingly, a collection of (fun)punk cover versions.

The band name "Die Roten Rosen" was a pseudonym chosen after a dispute with their record company. The actual band behind that record were "Die toten Hosen" ("The dead trousers") who wanted to record a punk cover album of German Schlager songs from the Sixties and Seventies.

Those Schlager songs had a dubious reputation of being really old-fashioned, superficial and kind of prissy; so the songs needed some musical update.
That's why Die toten Hosen wanted to record their punk cover version (and because it's fun :-) ).

However, their record company didn't allow them to release the cover album under their regular, well-known name; so they chose the similar name "Die Roten Rosen" as their pseudonym for the album (a name that made it really easy to guess which band was actually behind that pseudonym - so the resistance of the record company was a moot point).

Read https://en.wikipedia.org/wiki/Never_Mind_the_Hosen,_Here%27s_Die_Roten_Rosen for more information about the cover album.

Ok, here's finally their cover version of the Club Honolulu cover version: https://www.youtube.com/watch?v=eWALn7e1YEo - fun. :-)

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By the way: The Bombalurina version is dubious in more than one way. Not only is it impressively unnecessary, it may also feature a wanna-be singer IF later accusations are true.
The article at https://www.standard.co.uk/showbiz/timmy-mallett-accused-of-itsy-bitsy-teeny-weeny-porkie-6850566.html says that the alleged singer, Timmy Mallett, didn't sing himself; the actual are said to have been sung by Everton Barnes. I can't say anything about whether the allegation is true or not.

To save the best for last, the Bombalurina version was produced by none other than Andrew Lloyd Webber.
At least, that's what https://www.digitalspy.com/music/a136854/webber-makes-itsy-bitsy-confession/ says. I'm sure you didn't see that coming. ;-)