Instruct: Classify a given review into positive or negative sentiment.
Query: Welcome back, Doyle!

What a great return to bluegrass for Doyle Lawson and Quicksilver! After six years without a secular album, and too many southern-style gospel albums that took him further and further away from the bluegrass sound, Doyle is back with a vengeance, as well as with the best vocal blend I've heard from this group in years. Great songs, fine instrumentals, and super singing make this the best Quicksilver album in ages. This is solid, traditional bluegrass, and the singing can't be bettered. This is what Doyle Lawson and Quicksilver are all about!