I'm 72 years old and have been singing karaoke since April 30, 2002, the day I retired. It took me three, yes three, pitchers of beer to get up on the stage and sing. I've tapered off since then and need nothing to get a deathgrip on the mic, except maybe a eucalyptus lozenge now and then. Before I knew it, I had a JVC 3 deck, a couple good speakers, and over 5000 songs. I don't know why, a singer doesn't really need more than 10, aw heck, 20 songs. My wife and I go out 2 or 3 times a week and do the ol' kroke bit.
There are a bunch of duets & singalongs in my "Open Duets" folder...Take a look, ya might find something you like!!!!