This is Santana's best work in years. The tracks that don't have guests are some passionate fusions of latin, blues, jazz, and rock. The guest singers add their own styles to their tracks. Lauryn Hill seems out of  place, as does Wyclef Jean. Dave Matthews croons effectively, Everlast  sounds surprisingly decent, and Rob Thomas shows that he can sing with the  best of them on the sultry "Smooth". And who can forget Clapton?  The guitar gods create a whopper with the closing track, "The  Calling." A very good purchase worth any Santana fan's time or anyone  that loves good music.