It sounds like crap...rather simple logic. The charm of the original is Sting's vocal at the edge of breaking...(of course the bass is iconic).
(Am speaking
specifically about
Roxanne- plenty of tunes work well in many keys, as mentioned in my OP)
Same with covering the Beatle's version of Twist and Shout. John's range, pushed to the limit gives it signature, unmistakable character.
Of course it can be transposed but if trying to sound like the Beatles, any transposing removes any chance of nailing the sound we are used to...it would be like playing Back in Black on a clean 50's Fender Tweed. It is not just the notes but the sound, the texture.
I have zero problems transposing (better on some instrunents than others) and again, i said
I have no business singing it. For others YMMV.
As was mentioned previously if the key change drastically changes the
sound
of the tune, better off to try an innovative arrangement.
Plenty of awesome covers in different keys and the succesfully performed ones, to my ears will change up the style/arrangement to make the sound fit the key. Key signatures have particular sounds and the reason some songs resonate so much with many of us have to do with that sound.
Edit: Am aware that TAS was not a Beatles original and the Isley Brothers version is awesome. But if trying to sound like John- it needs to be in that key....Certainly people will get up and dance if you play it well, regardless of key. All of this said as a singer long before I touched a bass.
Edit redux: I see we agree on the character of keys and sound- My logic is only based on how I hear things. As
@two fingers mentions- a Journey song down 3 steps will sound like absolute ish to me, regardless of how well and emotionally connected the song is- if a band is trying to do an otherwise note for note cover.