The first song that came to my mind is Teardrop, that one can be played on original key no doubt!!!

speaking of guitars I remembered JBJ talking about his Fender... "Fender for a number of reasons. I like the way I can get all the different tones just by changing the pickups, brighter or mellower, but most of all, it's nice and light and when you're doing a three-hour show it doesn't beat the hell out of you!"
Missing the Fender sound, just sayin’ -_-