I'm not usually a fan of tribute albums. They seem to contain too many artists you've only just heard of doing covers of songs that don't really differ markedly from the originals, which were almost always done better. But don't for one moment think that applies to this album, which is well worth seeking out.
If I have a negative comment - and I do, as I've only given this four stars - it's the flip side of one of this album's strengths; the extent to which many of the songs are played by many of the same performers behind the 'lead' name artist. This both ensures that there's a high standard of musicianship throughout the album - and so there should be in any tribute to one of the best ever guitarists - but also gives a common 'folky' sound to a number of the songs. I think this marks it down just a nadge; four-and-a-half stars, perhaps.
But don't think this applies to all the songs. Wall of Death sounds like it was written for REM; Bob Moult does a rip-roaring take on Turning of the Tide; Bonnie Raitt plays When the Spell is Broken magnificently. All three of these songs are, for me, highlights and worth seeking out in their own right.
And then there's Loudon Wainwright III and Shawn Colvin's cover of A Heart Needs A Home. I have to be careful when I play this song, as it's moved me to tears more than once (my singing it may have had the same effect on others). Magnificent stuff, one of my absolute all-time favourites and in my opinion worth the price of the album on its own.
The songs I haven't mentioned are all worth hearing, and each rather different to the original. If you're familiar with the originals, or any of the artists performing the songs, you should at least try and hear them. But better would be to by the album and let it grow on you; it will.