John Hidsill,
You won't get too much agreement on your perspective re:JT and covers (or whether he sings well) but at least it got your post noticed.

My least favortie cover ever was possibly Rita Coolidge's redo of Jackie Wilson's "Higher and Higher". Wison was elecrifying, after listening to Coolidge my heart needed a restart with those eletric paddle thingys they use in ER

.....CLEAR!!!

not truly covers, rather redos--the most mismatched performances I ever witnessed --

1.Aretha Franklin and James Taylor doing a duet of "Shed a Little Light" at one of the inaugural balls 1997

2.John Mellencamp and Paul Simon duet for a R&R special -- the Boxer never sounded so pitiful.