Many people have complained about Carlos Santana selling out to mainstream.  Well, he did, but look at the results!  This disc is absolutely stunning.  Smooth was undoubtedly one of the biggest singles ever.  It was on my local radio stations playlist for about ten months, and crossed over many formats.  The next single was the smooth and laid back Maria Maria, which became another hit.  This track featured Wyclef Jean singing lush vocals, and the result is urban meets Spanish styles.  There is a wide range of guest artists on here: Lauryn Hill, Rob Thomas, Eric Clapton, Dave Matthews, Everlast, Wyclef Jean, Mana, Eagle Eye Cherry and Cee Lo.  All of them sound great on this disc, and their personal styles intertwine with Carlos's making for a rich and original sound.  There are several mini instrumental masterpieces on this album, most notably the catchy and danceable Africa Bamba.  There is definately a reason this was the number one album for so long.  Just pop this CD in your player and see why.  Carlos Santana is a musical genius, and hopefully he'll stay around for awhile.