...well I have to say "Love the Way it Should Be" is my favourite Prince Lincoln song (though this was a grower for me, so I can understand why some might not like it). It's also a nice song to sing along to to test out your own falsetto
I don't know whether I've somehow managed to bypass a lot of his works, but to my mind I always felt that he could have done a lot more with his voice. He did a couple of jingles for Dread Broadcasting Corporation accompanied only by acoustic guitar (there is one on the recent DBC set put out by Trojan). Another of these was quite long. I used to find myself re-winding the tape just to here him warble/croon!