As regards KC, anything on
Red, but mostly "The Great Deceiver" - not melodic by any means, but an extremely expressive performance. As to
LTiA, Wetton's vocals are the reason why I knocked a star off one of my all-time favourite albums.. Enough said!
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As to UK, I am particularly fond of "Rendezvous 6:02", which I find Wetton tackles way better than "Book of Saturdays" or "Exiles". About Asia, the less said, the better
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...
However, any Wetton fans should check his performance on Steve Hackett's
The Tokyo Tapes, where John sings the likes of "Watcher of the Skies" and "Firth of Fifth" with surprisingly good results - as well as his guest appearances on the Pink Floyd tribute album
Back Against the Wall, where he masterfully interprets "Mother" and "Hey You".