Where are they now?

At each stage someone gets eliminated, I always tell myself that they will still be good because of all the publicity they got, but I don't actually know how true that is.

Do you know where all of last season contestants are? Did they ever do a The Voice tour? I don't keep up with the artists, so how have they done in the past? (Especially not the winner, but the winner too!) Sorry if this is a constantly reasked question.