It's been renewed for season 5
http://tvseriesfinale.com/tv-show/the-sing-off-season-five-renewal-for -nbc-series-34184/comment-page-1/#comment-1824173
There's something here that doesn't make sense. Let's go and poke it with a stick.-The Doctor
I do not have attention deficit disor...Ooh, look at the bunny!