[youtube]http://www.youtube.com/watch?v=Zk0GPu6JuGo[/youtube] Tonight, Mississippi-born R&B singer/songwriter Dave Barnes plays a Christmas show at Tipitina’s with Nashville’s Dave Holcomb. Here’s Barnes’ “Christmas Tonight,” an updated version of “Baby, It’s Cold Outside.” On record, he’s partnered with Hillary Scott; on screen, his love is Love – Jennifer Love Hewitt, who’s apparently no better with tinsel than the rest of us.