The Hills are Alive with... (The Great Soundtrack Debate)

Here's a nice quiz. Which artist is associated with "The Sound of Music"? Who performed "My Favourite Things" and "Maria"? That's right! Richard Rogers!
Er...
In case you got those questions wrong, here's an easier one. Which child star made the song "Somewhere over the Rainbow" famous? Hmmm. Pat yourself on the back if you said Harold Arlen.
Er...
Many MBz editors aren't interested in soundtracks, but it seems the ones that are have an esoteric way of dealing with them. I don't see a need for soundtracks to be treated any differently to pop records. They are sold to more or less the same customer base, and come in colourful sleeves with a handy list of artists and titles, so why is there a guideline telling editors to use *composers* for songs for whom the *performer* is universally known? Why were musical composers chosen instead of their equally talented lyricists? Why, to cut to the quick, do we have to mess up something that was perfectly fine as it was?
On the OST recording of The Sound of Music, the main artist is Julie Andrews. It's *her* flinging her arms up as she "Climbs Ev'ry Mountain" on the sleeve, not Richard Rogers (or Oscar Hammerstein III for that matter). "The Wizard of Oz" is all about Judy Garland and some men in fancy dress, not an old guy hunched over a manuscript. We have ARs for composers and lyricists. To the average music fan, they are strictly small print, bless 'em. Except for the special (yet arguable) case of classical releases, I think the Artist should be the *performer*. Everyone outside of Musicbrainz recognises this, so why can't we?
If, like me, you think SoundtrackStyle and the equally superfragilisticexpialatrocious SoundtrackTitleStyle are a crock of sh!t, then go to the relevant wiki pages and speak your brains.
If not, please tell me which of albums listed as "The Sound of Music" or "The Wizard of Oz" on MBz contains the actual songs from the films, because without the ExtraTitleInformation or performing artists that have been removed, I don't know where to look.

Stupid Guidelines: http://wiki.musicbrainz.org/SoundtrackStyle and http://wiki.musicbrainz.org/SoundtrackTitleStyle
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Cheers, Friend of Dorothy