These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
He covered Sting's "I'm So Happy I Can't Stop Crying" as a duet with the original artist. The duet outpeaked Sting's original on the pop charts.
A strange zig-zagging came with "I Can't Take You Anywhere". Keith originally recorded the song, but co-writer Scotty Emerick released it as a single two years later. Emerick's version featured a guest vocal from Keith.