If you're on a bluegrass kick I recommend ANYTHING Alison Krauss and Union Station.You'll never be the same hearing her voice,Jerry Douglas and the rest of the band.
Actually, I was first introduced to Allison Krauss when I was 16, she sang a song with Phish on their 1994 album "Hoist" she does have a beautiful voice.
Here's the song, (kind of a lame video montage and not bluegrass, but worth a listen!)
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